Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1965 - Super Strong NOS - Very Rare Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how these two German titans in vintage tubes rival each other, feel free to see our full sound review of 60s Telefunken E88CC in this listing: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional testing & sound evaluation Both tubes tested Super Strong NOS (120%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 14,900/14,800 Tube 2: 14,700/15,000 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the stronger. Appearance & Cosmetic condition Beside the world-class sound characteristics, we treasure this pair because of their excellent cosmetic condition. Over 95% of the paint and lettering are still clear on these 60-year old tubes. The 3-line Munich date codes etched on glass are perfectly visible - A0 1# 5D (A0 = E88CC, # = Munich, 5 = 1965, D = April) and A0 1# 5G (A0 = E88CC, # = Munich, 5 = 1965, G = July). Shipping Policy - Ship worldwide! Flat-rate expedited shipping (USPS Priority) within the US. - One business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available - request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS Ground Advantage International by default. Its the least expensive option and customs declaration is automated but it may take longer than other carriers. If you prefer to use a different carrier please contact us first so we can get you the correct shipping rates before you make payment. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. We have seen it all and we know what youre up to. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

CCa SIEMENS # MATCHED PAIR # GREY SHIELD # NOSgemessen auf Neuberger RPM 37016/16 17/17 mA 100% = 15 mA Mit Garantie

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1965 - Super Strong NOS - Very Rare Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how these two German titans in vintage tubes rival each other, feel free to see our full sound review of 60s Telefunken E88CC in this listing: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional testing & sound evaluation Both tubes tested NOS (100%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 12,600/12,000 Tube 2: 12,600/12,000 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the stronger. Appearance & Cosmetic condition Beside the world-class sound characteristics, we treasure this pair because of their excellent cosmetic condition. Over 95% of the paint and lettering are still clear on these 60-year old tubes. The identical 3-line Munich date code etched on glass is perfectly visible on both tubes: - A0 1# 5C (A0 = E88CC, # = Munich, 5 = 1965, C = March). Shipping Policy - Ship worldwide! Flat-rate shipping (USPS First-Class) within the US. - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise on the next business day. - Combined shipping available. Please request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS First Class Mail International by default. Its the least expensive option (even cheaper than eBay International Shipping) but may take longer than other carriers. If you prefer to use a different carrier please contact us before you buy so we can get you the correct shipping rates. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. Soundlumias founder is a seasoned sound professional who has advised orchestras and music studios in sound production in USA for over two decades, and knowing sound is the minimum skill requirement of our team. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

Perfect matched & balanced pair of vintage Siemens CCa Audio Tubes - Munich 1965 - NOS - Extremely Rare Tubes Summary They say only one out of 150 tubes was selected from each batch. They say the design and manufacturing of these was a covert operation only known to the German military. They say the tube specs had not been published until decades later. Be it unverified anecdote, rumor, reverent whisper from audiophiles or innocent misinformation spread by tube enthusiasts totally out of their utmost respect for the sonic wonder of the century, our picky audiophiles ears approve of Siemens CCas superior qualities...on all accounts: matched triode sections, low noise screening, minimum 10,000-hour heater life expectancy, carefully controlled frame grid winding and anti-vibration military build - this is about as good as it can ever get in the entire 6DJ8 tubes family! Sound Qualities As the military version of Siemens E88CC, the CCa tube naturally posses all the greatest traits of the family: the airy and transparent natural tone unrivaled even to this day, the extended yet never tizzy top end, the incisive, neutral and balanced midrange presentation, the clearly defined and deeply controlled bass thats always there with the perfect amount of weight. All these fantastic sound characteristics multiplied by three and thats what you should expect from the Siemens CCa. And the most defining sound characteristic of Siemens tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to reveal the subtle ambient clues that help complete building a truly 3D holographic sound reproduction. The sound stage of Siemens CCa is amazingly wide and feels like the holographic field gets flattened into a panoramic view of your music, still curvy and enveloping, and with added head room - nothing in the sound can escapes your ears (or eyes.) While as quiet and analytical as the Telefunken CCa/E188CC tubes, Siemens CCas also create a warmer, smoother and sweeter German tone (and very German) thats rarely heard elsewhere. Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional testing & sound evaluation Both tubes tested NOS (100%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 12,500/12,500 Tube 2: 13,000/13,000 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the stronger. Appearance & Cosmetic condition Beside the world-class sound characteristics, we treasure this pair because of their excellent cosmetic condition. 100% of the paint and lettering are still clear on these 60-year old tubes. The identical Munich date code etched in glass is perfectly visible - #5L (# = Munich, 5 = 1965, L = December.) Shipping Policy - Ship worldwide! Flat-rate expedited shipping (USPS Priority) within the US. - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available - request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through eBay International Shipping program by default. Its the least expensive option and customs declaration is automated but it may take longer than other carriers. If you prefer to use a different carrier please contact us first so we can get you the correct shipping rates before you make payment. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. We have seen it all and we know what youre up to. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

2 authentic old production siemens germany audio tubes special edition e88cc cca 6922legitimate glass base stamp w/ musical natural flat response tone, similar to telefunk of the timelegendary holographic imaging for a transparent listening experience, grail regarded harmonicssuperb preamp upgrade for tube mics vocals instruments stereos and more hifidelity appsaudio grade pair (singles/quads available) w/ special proprietary cali acoustics refurb processfull mutual gm test for all parameters +100% mutual gm pristine spec balance matchedcurated from a private collector, ships fast well packed worldwide w/ siemens tube boxes ~authentic vintage audiophile collectibles by cali acoustics~ (we dont relabel tubes, oe fragile only) current inventory includes:6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc12ax7 12au7 12at7 12ad7 (new) / ecc83 ecc82 ecc81 6201 (new)6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85 ~ 6ca7 el34 audiophile verified compatible apps include:preamps stereos vocals instruments tube mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audioresearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk mono blocks +many more!

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

2 old stock balanced siemens germany e88cc audiophile tubes (several pairs in stock!)rarest sought after early vintage hifidelity! grail ranked musicality precision and bass resolvematched 100+% mutual gm / audio grade w/ one of a kind proprietary cali refurbish processsuperb tone upgrade for mics amps vocals instruments stereos / legendary transparency!ships fast worldwide w/ siemens tube box, per pair ~authentic vintage audio collectibles by cali acoustics~ (nos tubes require up to 100+ hours to truly settle in, otherwise you are likely buying used)(be aware of relabelers/reprinters especially cca!) current inventory includes:6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc12ax7 12au7 12at7 12ad7 (new) / ecc83 ecc82 ecc81 6201 (new)6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85 ~ 6ca7 el34 verified apps include:preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audioresearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk mono blocks + many more!

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1964 - Same date code - Strong NOS Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how the two German titans in vintage tube sound compare to each other, please check out our full sound review of 60s Telefunken E88CC here: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing Both tubes tested Strong NOS (110%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 14,200/13,900 Tube 2: 14,600/13,900 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. No shorts, gas grid leakages or microphonics. Appearance & Cosmetic condition Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The identical 3-line Munich date code etched on the glass is perfectly visible on both tubes: A0 1# 4K (A0 = E88CC, # = Munich, 4 = 1964, K = November) Packaging This pair of tubes will be packaged in the new Siemens tube boxes, secured by a hand-made paper ribbon (by courtesy of Soundlumia.) Shipping Policy - Ship worldwide! Flat-rate shipping to all states in the US via USPS Ground Advantage (formerly known as USPS First Class Package.) - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available - request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS Ground Advantage by default. Its the least expensive option and includes insurance up to $100 but it may take longer than other carriers. If you prefer to use a different carrier or if you want to protect your purchase with additional insurance, which we strongly recommend it for orders over $300, please contact us before you buy so we can get you the correct shipping rates before you make payment. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. We set extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. We have seen it all and we know what youre up to. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% Rare set, high NOS values, same date 1. 100.5/62 PC 22.4120/62 PC 26.8 2.108.5/62 PC 24.3113/62 PC 26.6I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1964 - Same date code - Strong NOS Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how the two German titans in vintage tube sound compare to each other, please check out our full sound review of 60s Telefunken E88CC here: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing Both tubes tested NOS (100%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 13,200/13,000 Tube 2: 13,000/12,700 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. No shorts, gas grid leakages or microphonics. Appearance & Cosmetic condition Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The identical 3-line Munich date code etched on the glass is perfectly visible on both tubes: A0 1# 4K (A0 = E88CC, # = Munich, 4 = 1964, K = November) Shipping Policy - Ship worldwide! Flat-rate shipping (USPS First-Class) within the US. - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available. Please request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS First Class Mail International by default. Its the least expensive option (even cheaper than eBay International Shipping) but may take longer than other carriers. If you prefer to use a different carrier please contact us before you buy so we can get you the correct shipping rates. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. Soundlumias founder is a seasoned sound professional who has advised orchestras and music studios in sound production in USA for over two decades, and knowing sound is the minimum skill requirement of our team. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1964 - Same date code - Strong NOS Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how the two German titans in vintage tubes compare to each other, please check out our full sound review of 60s Telefunken E88CC here: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing Both tubes tested Strong NOS (110%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 14,000/14,000 Tube 2: 14,100/14,000 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. Appearance & Cosmetic condition Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The identical 3-line Munich date code etched on the glass is perfectly visible on both tubes: A0 1# 4F (A0 = E88CC, # = Munich, 4 = 1964, F = June) Shipping Policy - Ship worldwide! Flat-rate shipping (USPS First-Class) within the US. - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available. Please request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS First Class Mail International by default. Its the least expensive option (even cheaper than eBay International Shipping) but may take longer than other carriers. If you prefer to use a different carrier please contact us before you buy so we can get you the correct shipping rates. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. Soundlumias founder is a seasoned sound professional who has advised orchestras and music studios in sound production in USA for over two decades, and knowing sound is the minimum skill requirement of our team. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1961 - Practically same date code - Strong NOS Product Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at the phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how the two German titans in vintage tubes compare to each other, please check out our full sound review of 60s Telefunken E88CC here: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing Both tubes tested Strong NOS (110%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 14,800/15,100 Tube 2: 14,700/14,900 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. Appearance & Cosmetic condition Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The identical 3-line Munich date codes etched on the glass are perfectly visible on both tubes: A0 1# 1G (A0 = E88CC, # = Munich, 1 = 1961, G = July)A0 1# 1H (A0 = E88CC, # = Munich, 1 = 1961, H = August) Shipping Policy - Ship worldwide! Flat-rate shipping (USPS First-Class) within the US. - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available. Please request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS First-Class International by default. Its the least expensive option (even cheaper than eBay International Shipping) but may take longer than other carriers. If you prefer to use a different carrier please contact us before you buy so we can get you the correct shipping rates. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. Soundlumias founder is a seasoned sound professional who has advised orchestras and music studios in sound production in USA for over two decades, and knowing sound is the minimum skill requirement of our team. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1964 - Strong NOS Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how these two German titans in vintage tubes rival each other, feel free to see our full sound review of 60s Telefunken E88CC in this listing: https://www.ebay.com/itm/266252586987 Appearance & Cosmetic condition Beside the world-class sound characteristics, we treasure this pair because of their excellent cosmetic condition. Over 80% of the paint and lettering are still clear on these 60-year old tubes. The Munich date codes etched on the glass the glass are perfectly visible - A0 1# 4A (A0 = E88CC, # = Munich, 4 = 1964, A = January) and A0 1# 4G (A0 = E88CC, # = Munich, 4 = 1964, G = July), indicating they were made with only 6 months apart. Professional testing & sound evaluation Both tubes tested Strong NOS (100% - 110%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 12,500/12,700 Tube 2: 12,700/12,800 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. The pair worked wonderfully & sounded terrific in our test amp (Liquid Platinum by Alex Cavalli.) during professional sound evaluation. Shipping - Customers outside the US please pay attention Same business day handling. Combined shipping available for multiple purchases. Ship worldwide! Flat-rate shipping within the US. International shipping is through eBay International Shipping program by default. Its the least expensive option and customs declaration is automated but it may take longer than other carriers. If you prefer to use a different carrier please contact me before you make payment so I can get you the correct shipping rates ahead of time. Return Policy - Please READ carefully First of all, returns are acceptable. All the tubes I list for sale are guaranteed to work because we run professional tests and listening sessions on them before packing. However, given that sound quality is an extremely subjective thing and its also not uncommon to run into combability issues because of different amp designs, please work with me before submitting a return request through eBay or opening a item defective or not working case. I would really appreciate it. I do my best to make you happy with your purchase but please respect the professional work (matching & testing tubes and evaluating sound) I have done to make these wonderful vintage items available to you at a reasonable price. Secondly, if you are a tube roller looking to game the return system, Number One STOP. I am a professional audiophile for over two decades and I advise orchestras and music studios in sound production so I do know what I am talking about when it comes to sound and equipment - tubes, headphones, DACs, amps - you name it. So no tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats also guaranteed.

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA