Biete 2 Paare (4 Stück) nie benutzte VALVO vintage E88CC, die lt. geätztem Herstellercode von Philips (Heerlen/Holland) gefertigt wurden. Gold pins. Ein Paar stammt aus dem identischem Fertigungslos 7L4, das andere aus dem Los 4K1. Alle 4 getestet/gemessen auf Funke W19 mit 11/11,5 - 10/9,5 mA (Paar 7L4) und 11/11 - 10,5/10,5 mA (Paar 4K1), gut ab 6 mA, keine Schlüsse, Vakuum gut, Verstärkung gut. Abgabe der Röhren so wie sie sind, wie fotografiert und da von privat ohne Garantie oder Rücknahme bzw. Umtausch. Versandspesen 6,- Euro (BRD) / EU 15,- Euro (oder höher, abhängig vom Empfängerland*). This a European Auction. European adress required! *Final EU shipping costs depend on your location - please await my invoice before you start payment!

Biete 4 nie benutzte VALVO vintage E88CC, die lt. geätztem Herstellercode von Philips (Heerlen/Holland) gefertigt wurden. Gold pins. 3 stammen aus identischem Fertigungslos 9H2, die 4. aus dem Los Nr. 9H1. Abgabe der Röhren so wie sie sind, wie fotografiert und da von privat ohne Garantie oder Rücknahme bzw. Umtausch. Versandspesen 6,- Euro (BRD) / EU 12,- Euro (oder höher, abhängig vom Empfängerland). This a European Auction. European adress required! Am 09.01.24 hat der Verkäufer die folgenden Angaben hinzugefügt: FOREIGN BIDDRES PLEASE CONSIDER! Worldwide shipping costs outside Europe US$ 50.- (insured) - US$ 20.- (not insured) !

Biete 2 Paare (4 Stück) nie benutzte VALVO vintage E88CC, die lt. geätztem Herstellercode von Philips (Heerlen/Holland) gefertigt wurden. Gold pins. Ein Paar stammt aus dem identischem Fertigungslos 7C2, das andere aus dem Los Nr. 5C1. Alle 4 getestet/gemessen auf Funke W19 mit 10/11 - 10/11 mA (Paar 7C2) und 11/11 - 11,5/11 mA (Paar 5C1), gut ab 6 mA, keine Schlüsse, Vakuum gut, Verstärkung gut. Abgabe der Röhren so wie sie sind, wie fotografiert und da von privat ohne Garantie oder Rücknahme bzw. Umtausch. Versandspesen 6,- Euro (BRD) / EU 12,- Euro (oder höher, abhängig vom Empfängerland). This a European Auction. European adress required! Am 09.01.24 hat der Verkäufer die folgenden Angaben hinzugefügt: FOREIGN BIDDRES PLEASE CONSIDER! Worldwide shipping costs outside Europe US$ 50.- (insured) - US$ 20.- (not insured) !

Ich biete hier ein Paar military-grade Philips ECG JAN 6922 (ECC88, 6DJ8), USA, NOS, nur zur berprfung fr 1 Stunde im Verstrker genutzt. Keine Strgerusche, keine Mikrofonie, voll funktional.

Perfect matched pair of vintage Philips SQ E88CC audio tubes - Made in Holland - 1965 - Same date code - Very Rare Tube Summary The beauty, the legend, the classic, the Special Quality(SQ) - this is the super tube from Heerlens high echelon that doesnt break your bank. Known for their superb musicality and ultra low noise, thanks to Philips proprietary SQ design, these tubes remain among audiophiles top choices for serious listening. Sound Characteristics Immediately appealing is the super smooth highs offered by these tubes with lots of open air. The overall tonality of SQ is warm, musical and euphonic. The midrange displays some secondary octave nuances, which is very unique and can hardly be found even among the top-end German tubes. Similar to the Telefunken tubes, the SQs can create infinite levels of harmonic depth and a liquid sonic texture without altering the musicality of the sound. The bass on these is the clear winner of the Heerlen tubes family: articulate, accurate, deep, textured, full-bodied and powerful. The sound stage is wide and structured - it feels the dimensions of the sound shape are clearly defined no matter how it moves. Vocal representation on the SQs is close to Mitcham and Blackburn Mullard tubes in terms of warmth, sweetness and texture, making them great alternatives to Mullards as the best vocals tube. But what truly shines on SQ tubes, especially the ones from the 1960s like this pair, is their magic in portraying piano music: creamy smooth, richly colored, realistic and intimate. For many audiophiles (incl. ourselves), theyre the go-to tube for piano sound. Listening to Claudio Arraus Beethoven Complete Piano Sonatas on these tubes should be on your bucket list if you happen to be into classical piano music, but even if you are not, these tubes superb interpretation of piano music from any genre will amaze you. The ultra low noise on SQs also sets them apart from most of the high-end tubes. They dont just compete with Telefunken tubes in low noise; theyre known for being a long-term leader in low noise. As a result, you get superb detail and clarity from these tubes as well. 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 Super Strong NOS (120%+ nominal mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in both uMhos and percentage of nominal value): Tube 1: 14,900/15,000 Tube 2: 14,900/15,000 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 Besides the world-class sound characteristics, we still treasure this pair for its near pristine cosmetic condition given the tubes age - over 95% of the paint is still intact on both tubes, and the identical date code of the Heerlen factory etched in glass is perfectly visible on both tubes: delta 5L2 (delta = Heerlen, 5 = 1965, L = Feb, 2 = 4th week of the month) Shipping Policy - Ship worldwide! Flat-rate shipping (USPS Ground Advantage) within the US. - Same business day handling. Orders are scheduled to ship within 24 - 48 hours of complete payment and in most cases they are posted on the same business day or in the AM the next business day. - We combine shipping for multiple purchases. Please request invoice for total before making payment or receive shipping credit after order has shipped. - Customers outside the US please pay extra attention: International shipping is through USPS Ground Advantage International by default. Its the least expensive option and includes $100 insurance but may take longer than other carriers. If you prefer to use a different carrier or add extra insurance to your order 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. 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.

Quartetto di 6922/E88CC JAN Philips sono nuove in scatola originale, testate per transconduttanza con provavalvole uTracerValore da datasheet 12,5, risultati del testValvola 1 triodo1 12,1 triodo2 12,6Valvola 2 triodo1 12,6 triodo2 12,6Valvola 3 triodo1 12,2 triodo2 12,5Valvola 4 triodo1 12,8 triodo2 12,8Spedizione combinata per più oggetti Disponibile per qualsiasi chiarimento

Philips S.Q. 6922 Nos Nib Matched Pair Same Code 7LH-8D1 Gold Pin Made Holland. Coppia di valvole nuova perfetta

Perfect matched pair of vintage Philips SQ E88CC audio tubes - Made in Holland - 1969 - Very Rare Tube Summary The beauty, the legend, the classic, the Special Quality(SQ) - this is the super tube from Heerlens high echelon that doesnt break your bank. Known for their superb musicality and ultra low noise, thanks to Philips proprietary SQ design, these tubes remain among audiophiles top choices for serious listening. Sound Characteristics Immediately appealing is the super smooth highs offered by these tubes with lots of open air. The overall tonality of SQ is warm, musical and euphonic. The midrange displays some secondary octave nuances, which is very unique and can hardly be found even among the top-end German tubes. Similar to the Telefunken tubes, the SQs can create infinite levels of harmonic depth and a liquid sonic texture without altering the musicality of the sound. The bass on these is the clear winner of the Heerlen tubes family: articulate, accurate, deep, textured, full-bodied and powerful. The sound stage is wide and structured - it feels the dimensions of the sound shape are clearly defined no matter how it moves. Vocal representation the SQs is close to Mitcham and Blackburn Mullard tubes in terms of warmth, sweetness and texture, making them great alternatives to Mullards as the best vocals tube. But what truly shines on SQ tubes, especially the ones from the 1960s like this pair, is their magic in portraying piano music: creamy smooth, richly colored, realistic and intimate. For many audiophiles (incl. myself), theyre the go-to tube for piano sound. Listening to Claudio Arraus Beethoven Complete Piano Sonatas on these tubes should be on your bucket list if you happen to be into classical piano music, but even if you are not, these tubes superb interpretation of piano music from any genre will amaze you. The ultra low noise on SQs also sets them apart from most of the high-end tubes. They dont just compete with Telefunken tubes in low noise; theyre known for being a long-term leader in low noise. As a result, you get superb detail and clarity from these tubes as well. Appearance & cosmetic condition Despite the loss of some lettering on one of the tubes, we still treasure this pair for its great cosmetic condition given the tubes age - over 85% of the paint is still intact on both tubes, and the identical date code of the Heerlen factory etched on glass is perfectly visible: delta 9K4 (delta = Heerlen, 9 = 1969, K = November, 4 = 4th week of the month) 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 DACAmplification: Liquid Platinum by Alex Cavalli Output: Focal Clear MG Pro open-back headphonesOur 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%+ nominal mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 13,200/13,400 Tube 2: 13,200/13,800 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 stronger. 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. 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 for most countries/regions in the world) but it 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. 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.

6922 JAN 6922 Used Philips ECG USA Valve Tubes Price is for 1pc.

FOR SALE E88CC Philips Heerlen - perfect balanced- 7LG productioncode Test Results: Ia 1: 16,11 (mA) 107 % of nominal 15 (mA) Ia 2: 16,01 (mA) 107 % of nominal 15 (mA) Gm 1: 12,93 (mA/V) 103 % of nominal 12,5 (mA/V) Gm 2: 12,81 (mA/V) 103 % of nominal 12,5 (mA/V) Ra 1: 2,66 (kohm) 102 % of nominal 2,6 (kohm) Ra 2: 2,71 (kohm) 104 % of nominal 2,6 (kohm) mu 1: 34 (-) 104 % of nominal 33 (-) mu 2: 35 (-) 105 % of nominal 33 (-)

Verk. ein nie benutztes (NOS/NIB) Quartett VALVO vintage E88CC lt. Foto. Alle 4 Röhren stammen aus dem identischen Los Nr. 7L4 ! Sie wurden lt. geätztem Herstellercode von Philips (Heerlen/Holland) gefertigt. Abgabe von privat, daher keine Garantie oder Rücknahme. Versandspesen 6,- Euro (BRD) / 12,- Euro (EU). This is a European auction. European adress required!

You are bidding for One pair Philips PQ E188CC 7308 E88CC Cca 6922 6DJ8, Gold Pins, O getter NOS Testing made in Holland in 1960s. These tubes are ideal for C37 studer. Return is accepted if you pay return shipping fees. They are carefully tested on my tube tester TV-7D/U at the NOS range tightly matched pair with no short and no gas. The price is one pair but there are many in stock. ThanksP/S: The shipping fees in the listing is by regular mail (normally Vietnam post) taking from 12-25 days depending on buyers local customs. To some regions, it can take even longer than that. Besides, Vietnam post is not always available to some countries in South America, Northern Europe or Africa. Please ask me before paying. If you want to use express shipping services like DHL, Fedex or UPS express taking 3-7 working days, you have to pay an extra of around $60. Please let me know so that I can send you an invoice. If the item(s) purchased may not arrive or faulty, please dont hesitate to contact me before opening cases on ebay. I am willing to reach to a solution and make you completely satisfied. Thanks a million

Die Röhre ist mit digitalem Röhrentestgerät ((c) Helmut Weigl) geprüft worden und ist NOS. Da die Röhre(n) über 50 Jahre alt ist (sind) kann ich keine Funktion gewährleisten. Bei einer Abholung ist eine Messung bei der Übergabe möglich. Bei mehreren Artikeln werde ich versuchen immer gebündelt zu verschicken. Privatverkauf, keine Rücknahme oder Umtausch, keine Garantie. Ich schließe jegliche Sachmangelhaftung aus. Die Haftung aus Schadenersatz wegen Verletzung von Gesundheit, Körper oder Leben und grob fahrlässiger und/oder vorsätzlicher Verletzungen meiner Pflichten als Verkäufer bleibt uneingeschränkt. elister3

One extremely rare and desirable pinched-waist 6922 tube, labelled as Amperex PQ, made in the pre-production period of 1947, in Heerlen of Netherlands.This tube set the standard for sound for all the 6922 derivatives of tubes in the subsequent years. If you are collecting tube, this is the one for you.Featuring gold pin, D-getter and long bottle body.Date code: ?7D (1957).Test Ratings: 105/105 and on my Jackson 648s tester, minimum is 70, new tubes at about 105-108.SHIPPING: Shipping rates quoted are for USA and Canada only. Shipping rates to Europe and Asia are subject to slight variation. The buyer for those countries will be informed about the exact rate after the sale. Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.

SoundStage Vacuum Two Preamp with 2 Philips JAN 6922 tubes.

SoundStage Vacuum Two Preamp with 2 Philips JAN 6922 tubes.

2 pristine matched 63 gold pin philips heerlen e88cc, quite rare early build lush airy warmthextended encounter 6dj8/ecc88 circuit plugin upgrade, limited run musical mid upgradelegendary linear response true tone images w/ unparalleled dutch house sparkely resolve finishsought after early 60s holland transparent magic illuminates a variety of musical genressuperb replacement for tube mics vocals stereos preamps instruments +more hifidelity appsaudio grade phono ready sound stage w/ special proprietary cali refurb processpristine nos (100+nos/65) balance matched pair 110/109~105/106 % mutual gmreal old silkscreen w/ nice labels and 63 date codes visibleships fast worldwide well packed w/ authentic philips 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!

1 Vintage 1965 Tested Philips Holland ECC88 / 6DJ8 / Vacuum tube! Please see shipping calculator for shipping costs, Item is located in Vancovuer BC and can be shipped with the USPS out of Washington state or Canada Post for Canadian buyers. items over $120 will not be shipped without tracking which can be pricey to some overseas locations. Please see below for details on shipping. Up for auction is a vintage Philips Holland ECC88 vacuum tube. The tube features, grey plates with an O getter. the date code is ??? Philips Logo 5I2 Tubes have been tested on a Calibrated Hickok TV7 tube tester and test as follows:Tube1 : 108/90 Minimum good value on a TV7 tester for a 6DJ8 tube is 62. The tubes test within or near the NOS range!Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs. See pictures for details. If you have any questions please email. I will ship worldwide.Buyer to pay all shipping costs including brokerage and taxes if any. Item is located in Canada but will be shipped with the USPS for USA buyers or Canada Post for Canadian buyers. For overseas buyers : Please email for options as sometimes Canada post is cheaper for overseas shipping with Surface post. Please wait for my invoice before paying to avoid any hassles. I do combine shipping to save you costs! See my other auctions for more vintage audio gear! Local pickup in Vancouver BC is also available. GOOD LUCK!!!!!!!

E188CC E88CC 6DJ8 ECC88 6922 PHILIPS MATCHED PAIR NOS 2pcsGold pins,10000 h,grey anode plates,o geter,tested,with boxThe Philips Holland SQ E188CC / 7308 Gold Pin is the holy grail of lush 6922 tone. These are right up there with Telefunken CCa and Siemens 7308 when it comes to rarity. To our ears these sound more musical than the Siemens or Telefunken. These have a large round getter and beautiful construction.EXTRA TUBES GREAT SOUND!!!!!!EXTRA MATCHED!!!EXTRA BALANCED!!!All the tubes that were sold worked for 72 hours on the aging device to stabilize and in order to capture the characteristics. otherwise, in practice, some tubes quickly change the characteristics that deviate from the given values of the anode current Ia. there can be a misunderstanding. so the pipes are allowed to work 72 hours in order to get as much to their proper characteristic.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 .Date code VR7??? / delta8K? and VR7???/delta8I4Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% Ia = 16/16mA and Ia = 16/6mA

E88CC E188CC 6DJ8 ECC88 6922 SQ PHILIPS two stars MATCHED PAIR NOS 2pcsGold pins,10000 h,grey anode plates,D geter,testedEXTRA RARE MATCHED PAIR !!!! EXTRA TUBES GREAT SOUND!!!!!!Many e88cc tubes needed to pair this pair matched to several criteria: date of production - same series and electrical characteristics. such pairing is rare !!!All the tubes that were sold worked for 72 hours on the aging device to stabilize and in order to capture the characteristics. otherwise, in practice, some tubes quickly change the characteristics that deviate from the given values of the anode current Ia. there can be a misunderstanding. so the tubes are allowed to work 72 hours in order to get as much to their proper characteristic.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 .Date code: All tubes 7L4 / triangle8J and etched for glassTested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% Ia = 16/15mA and Ia = 16/15.5 mA

Zum Verkauf steht hier ein Pärchen aus zwei sehr hochwertigen, seltenen Philips SQ E88CC Doppeltrioden. Die Röhren stammen aus der Auflösung einer Sammlung und sind in einem optisch guten Zustand. Sehen Sie sich auch gerne meine anderen Auktionen an, in denen weitere Röhren zum Verkauf stehen. Für weitere Details sehen Sie sich bitte die Bilder an, welche Bestandteil der Beschreibung sind. Ich schließe jegliche Sachmangelhaftung aus. Die Haftung auf Schadensersatz wegen Verletzungen von Gesundheit, Körper oder Leben und grob fahrlässiger und/oder vorsätzlicher Verletzungen meiner Pflichten als Verkäufer bleibt uneingeschränkt.Da es sich um einen Privatverkauf handelt, kann ich keinerlei Garantien geben. Bitte fragen Sie bei möglichen Fragen vor dem Bieten nach. Internationale Bieter willkommen! For sale here is a pair of very high quality, rare Philips SQ E88CC double triodes. The tubes come from the liquidation of a collection and are in a optically good condition. Please feel free to look at my other auctions where there are more tubes for sale. For more details please see the pictures which are part of the description. I exclude any liability for material defects. Liability for damages due to injuries to health, body or life and grossly negligent and/or intentional breaches of my duties as seller remains unrestricted.As this is a private sale, I cannot give any guarantees. Please ask any questions you may have before bidding. International bidders welcome!

Perfectly matched & balanced pair of vintage Philips ECC88 6DJ8 audio tubes - NOS - Heerlen, 1963 - Same date code - Very Rare Sound qualities What a great decade for the legendary Heerlen tubes! You get the textbook Philips/Amperex Holland midrange presentation that is transparent, natural and expansive, with a slight touch of warmth that illuminates your musical world. The top end is super airy, smooth and nicely extended like one would expect from the best Siemens tubes. Vocals are intimate, sweet and forward (but not right in your face) and that always reminds me how the vocals sound on the best Mullard tubes. Bass is deep and well controlled and the accuracy feels very similar to the high end German ECC88s (Siemens, Telefunken.) To see how these sound differently from their German counterparts, please feel free to take at a look a wonderful pair of 1961s Siemens 6DJ8s weve recently sold here: https://www.ebay.com/itm/266281650331 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%+ nominal mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 13,000/13,000 Tube 2: 13,000/13,000 100% perfect match! 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 We treasure this pair for its near pristine cosmetic condition - nearly 100% of the paint is well preserved. The identical date code of Heerlen factory etched on glass is also perfectly visible on both tubes: delta 3D3 (delta = Heerlen, Holland, 3 = 1963, D = April, 3 = the 3st week of the month.) 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 for most countries/regions in the world) but it 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. Its DISHONEST to declare purchased items value less than the sale price on a US customs form. Its DISHONEST to declare a merchandise item as a gift on a US customs form. Soundlumia does not encourage or participate in such dishonest acts. Please do not send such request to us in the messages. WE will NOT respond to these messages and we will report repeat attempts to eBay. Buyers who cancel the order (or threaten to cancel) after purchase because we dont agree to change the declared value will be reported to eBay IMMEDIATELY and an abusive buyer case will be opened IMMEDIATELY. 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.