For your consideration are two Amperex 6922 E88CC Gold Pin PQ Premium Quality. These tubes were tested on a Hickok 539C where the minimum reading for this tube is 7000gm and the reading for a new tube is 10770gm or better The tubes tested at 12000gm/11500gm & 13000gm/12000gm

2 Amperex PQ E88CC/6922 O-Getter Gold Pin tubes. Nice set for your audiophile needs. From private collector and been treated well.

vintage old stock balanced amperex 6922 premium quality stereo tube, authentic usa ny 65legendary bass extension and tone clarity, sought after limited run white label hifidelity warmthreference grade musicality! superb for vocals instruments stereos preamps tube mics+collectible pristine condition and top gm spec! 130% audio grade full testships worldwide well packed w/ new philips box ~see our other amperex listings for alternate listening position experiences~~cali acoustics~ ~lofi/hifi warm/bright vintage tone 6dj8 6922 e88cc apps and more~~rodemics liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons bluemics echo conrad frontiers pathos vac and more!~

Perfect matched & balanced pair of 1958/1959 vintage Amperex 6922 PQ audio tubes w/ D-getter and gold pins - Made in Holland - Strong NOS - Super Rare Tube Summary Our best seller is back in stock - the Amperex 6922 PQ (Premium Quality) tubes! And this time the Holland version with the super rare D-getter. We have recommended PQs to more than 15 wonderful patrons of the Soundlumia, who are enjoying these tubes in their class leading amplifiers from Audio Research, Ear, Schiit Audio and Cavalli etc. and are raving about the superb PQ sound around the world. Sound Qualities Made in the Heerlen factory, these PQs are as sweet and smooth as any other the Amperex Holland 6922 tubes, with better detail and very spacious sound stage, which offers an amazing birds eye view of the shape of your sound, so you know exactly how tall and wide the sound stage is. The tone is warm yet lively, the midrange is transparent and expansive, although less forward than what you hear on their cousins from the Amperex New York factory. Bass is accurate and articulate but not too heavy, and the top end gets beautifully extended with a fine sense of airiness We have recommended them to so many satisfied customers that we have given them a nick name sound purifier - the sound that comes from PQ tubes (both USA and Holland) has absolutely no edginess, glassiness or harshness, and you hear nothing but the soul of your music and all of it. They are the best tubes to to put in the phono stage to purify your sound in my opinion. As to vocals, I have no further comment than that the best Mullards were actually sourced from Holland PQs (Made in Gt. Britain w/ Heerlen date codes) and we all know what Mullard is best known for. And what differences does the D-getter make on these? PQ sound further purified: cleaner and smoother with taller imaging. Appearance & cosmetic condition This pair is extra rare because nearly 90% of the inscription (Amperex & Made in Holland lettering, PQ logo and Premium Quality lettering) is intact and perfectly visible, and the Heerlen date codes etched on glass are also clear and intact: 7L4 delta 8C (7L4 = Change code, delta = Amperex Heerlen, 8 = 1958, C = March)7L4 delta 9K (7L4 = Change code, delta = Amperex Heerlen, 9 = 1959, K = November) 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 (left): 12,700/12,500 Tube 2 (right): 12,500/12,400 Good tubes start at 7,000 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. Flat-rate shipping within the US. Combined shipping available multiple purchases. Ship worldwide! 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.

Perfect matched & balanced pair of vintage Amperex JAN 7308 audio tubes w/ Gold Pins - Made in USA (1966) - Strong NOS - Very Rare Tube Overview Built and tested according to military specs of the Joint Army Navy (JAN), Amperex JAN 7308 has been one of the most reliable 7308/E188CC tubes known to the world: its quality is more than premium, although it doesnt carry the aweing PQ label like its more expensive siblings do; its performance is superb and in fact very few tubes in this price range can claim to be stronger; its low noise should only by judged by the most experienced sound experts because we are talking about the very tube built for and certified by the US military for mission-critical communication devices; its sound signature is phenomenal (I dont use this word very often to describe tube sound) and many audiophiles consider the Holy Grail (75 Reflektor 6N23P) its only possible upgrade path. Sound Qualities The clarity and sound detail on JAN 7308s are second to none. These tubes deliver the same resolution and grip you get from the best German and Dutch tubes from the same league(7308/E188CC.) These tubes have a clean, incisive presentation, but are also euphonic and musical. Like the HGs they put all the differing and competing attributes together in one excellent package. As a result, theres no one area they are weak in so you can use them for most listening occasions - music, monitoring or movie watching. The sound stage is not only wide but also deep so every listening experience feels like at a live concert. The instrument separation is not done as beautifully anywhere else, as one would expect from tubes this quiet. The top end is smooth and airy and theres absolutely no brightness or harshness. The midrange presentation is very similar to the Amperex Holland 7308/E188CC tubes - large, expansive and transparent - with added thickness in the upper midrange, which makes your sound warm and intimate, especially on the vocals. The bass delivery is world-class, as one should expect from a JAN tube at this level of the game: accurate, full-bodied, dynamic and always present. Appearance & cosmetic condition This pair is so rare because about 95% of the inscription (Amperex brand, Made in USA print and PQ logo) is intact and perfectly visible, which is amazing given the age of these tubes. The two tubes have the exactly same control code VR5 and date codes very close to each other: *6H (* = Amperex New York, 6 = 1966, H = August) , *6K (* = Amperex New York, 6 = 1966, K = November) meaning they were manufactured with only four months apart although in two different years. Professional testing & sound evaluation Both tubes tested Strong NOS (100% - 120% GM) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 13,700/13,200 Tube 2: 14,800/14,200 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 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.

2 legendary matched pristine pq amperex usa 6922 preamp/stereo tubeshifidelity liquid tone holographic lively imaging extended details pro bass stage depthfully tested audio grade! phono ready, give 100+ hours to fully settle in (nos/not used!)ships w/ plain or branded tube boxes worldwide! free usa postage ~cali acoustics~ *for different frequency range experiences see our other amperex 6dj8 6922 7308 listings!* ~vocals instruments preamps tubemics stereos lofi hifi ecc88 6922 6dj8 e88cc and more~~liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons rodemics bluemics conrad frontiers pathos vac and more~