4 legendary large halo air bass transparent tone warm resolve amperex 6dj8 ecc88 audio tubesmatched 100% mutual gm! audio grade quad, lush mids great for vocals instruments amps mics+popular 6922/e88cc circuit plugin w/ additional texture reveal and low level detailreal white label editions / fragile label handle with care faded due to age / date codes visible ~cali acoustics~ ~see our other listings for alternate listening positions, bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~~cali acoustics instagram / cali acoustics dot com (soon!)~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

2 sought after early production amperex 6dj8 ecc88 audio tubes, legendary white label stagemusical dutch warm resolution / real+fragile labels / proprietary cali refurb / audio grade!matched balanced full gm top spec/pristine 130% mutual gm (100+nos/65+good) ~cali acoustics~~see our other listings for alternate listening positions! bid/buy/best offer~ vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hificaliacoustics instagram (active) / caliacoustics.com (soon) ~ 6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~ 12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~ 6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 ~ ~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 +more apps~

Pair of Mullard/Amperex 12ax7. Made in Great Britain. Amperex Labelled. They look as never used. Test NOS & Perfectly Balanced. Tested with Hickok 600a tube tester, with 1250 as the reading of a nominal new 12ax7, the test scores are 1300/1300, 1300/1300.

4 legendary large halo air bass transparent tone warm resolve amperex 6dj8 ecc88 audio tubesmatched 100% mutual gm! audio grade quad, lush mids great for vocals instruments amps mics+popular 6922/e88cc circuit plugin w/ additional texture reveal and low level detailreal white label editions / fragile label handle with care faded due to age / date codes visible ~cali acoustics~ ~see our other listings for alternate listening positions, bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~~cali acoustics instagram / cali acoustics dot com (soon!)~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

Tube is used. Tube tested on Amplitrex AT1000 (Fixed Bias Setting). Test result is on sticker in the Emis %. Emis & GM baseline for tube 100%. Good quality tube reading is 80% to 100%. Tubes stronger than the baseline will have reading over 100%. Will combine shipping with other items I have listed on eBay _gsrx_vers_1516 (GS 9.3 (1516))

2 early production amperex 6922 stereo tubes (e88cc) warm grey risershifidelity musical imaging lush bass stage rich liquid tone detailed dimensional holographicscollectible premium usa vintage clarity and resolution depth, hard to find sought after hp specialsaudio grade circuit ready full gm test match balance 110/104 ~114/110 (100+nos/65+good) ~cali acoustics~ ~see our other listings for alternate listening positions! bid/buy/best offer~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hificaliacoustics instagram (active) / caliacoustics.com (soon!) ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~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 +more apps~

9 amperex 6922 hifidelity audiophile tubes, legendary usa clarity! euphony / tone / transparencyfull mutual gm test (7 nos / 2 used) + audio grade circuit ready + proprietary cali refurbishnos require 100+ hours to settle in / used tubes will have flashing! honest sellers / buyer be aware pq shield 64 nos 114/112 % mutual gm (100+nos/65+good)jan globe 66 nos 120/120 % mutual gm (100+nos/65+good)jan globe 68 nos 120/120 % mutual gm (100+nos/65+good)ck6922 special 61 nos 118/124 % mutual gm (100+nos/65+good)jan globe 66 nos 112/115 % mutual gm (100+nos/65+good)hp special 61 nos 114/110 % mutual gm (100+nos/65+good)rca 61 nos/strong 106/106 % mutual gm (100+nos/65+good) beckman 61 strong/good used 91/102 % mutual gm (100+nos/65+good)jan mil 75 good/good used 90/88 % mutual gm (100+nos/65+good) ~cali acoustics~~see our other listings for alternate listening positions! bid/buy/best offer~ vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hificaliacoustics instagram (active) / caliacoustics.com (soon) ~ 6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~ 12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~ 6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 ~ ~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 +more apps~

One RAYTHEON 5U4GB Tube NOS NIB Excellent Forward & Balanced Voltage AMPLITREX. Other than that we have many other tubes listed on our eBay store if interested in more (more will be listed within the week).

Vintage Amperex EZ81 6CA4 Radio Tube Very Strong & Balanced on TV7U. Tested at 50/50 on a professionally calibrated TV7U tube tester

1 x old stock hifidelity amperex usa 6922 audio tube, new york etch code authentic hifidelitysought after bass depth and liquid transparency! center stage warm imaging resolvefull test 100% mutual gm leak short gas+ (100+nos/65+good) and audio grade circuit readyvintage collectible sought after stage for preamps tube mics vocals instruments stereos+pro review vtv 97 issue! must listen build tone, ships per piece well packed + plain tube box ~see our other amperex listings for alternate listening experiences! best offer enabled~~cali acoustics~ ~vocals instruments amps mics stereos lofi/hifi bright/warm vintage tone 6922 6dj8 hifidelity~~rodemics k2 ntk at-4060 audio technica liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac+ more~

pair of balanced 50s amperex 6dj8 ecc88 audio tubes, reference grade high res dgetters!transparent imaging pro bass euphony great for mics amps stereos vocals instruments+full gm test match 115/118~115/110% gm (100+nos/65+good) and audio grade! circuit readycollectible hifidelity vintage audio, ships worldwide w/ plain tube boxes and free us post ~see our other listings for alternate listening positions, bid/buy/best offer~~cali acoustics~ ~vintage hifidelity tone vacuum tube pro audio warm bright lofi hifi~~6dj8 7dj8 6922 7308 ~ ecc88 pcc88 e88cc e188cc~~12ax7 12au7 12at7 ~ ecc83 ecc82 ecc81~~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~~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 +more apps ~caliacoustics.com (soon)~

2 early production amperex 6922 stereo tubes (e88cc) warm grey risershifidelity musical imaging lush bass stage rich liquid tone detailed dimensional holographicscollectible premium usa vintage clarity and resolution depth, hard to find sought after hp specialsaudio grade circuit ready full gm test over 100% nos, ships worldwide! well packed ~see our other listings for alternate listening positions, bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~caliacoustics instagram / caliacoustics dot com (soon!)~~cali acoustics~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

2 grail amperex dgetter 6922 gold pin audio tubeslegendary warmth / bass stage / detail clarity / mid euphony110/104~101/114 % mutual gm (100%+ nos/65+good) ~see our other amperex listings for alternate listening positions! bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~caliacoustics instagram live / caliacoustics.com (soon)~~cali acoustics~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

I have 1 Excellent perfect balanced amperex Holland 12ax7 tube labeled for Electrohome.This tube test 41-40 where 32 is the minimum good and new tubes test 48 to 50 on are tv7 tube tester.

I have 1 Excellent very strong perfect balanced Amperex gold pin 7308 tube .This tube test 98-98 where 50 is the minimum good and new tubes test 88 to 90 on are tv7 tube tester.

1 x old stock hifidelity 6dj8 ecc88 amperex audio tube, limited run collectible 69 curvetop ranked 6922/e88cc circuit plugin w/ additional texture reveal and low level detailslively sound stage superb ceiling for vocals tube mics preamps instruments + more3 available, full gm test 114/114 ~ 99/95 ~ 93/91 % mutual gm (100%+nos/65+good)authentic holland etch code! nos always give 100+hours to settle inships worldwide per piece well packed w/ plain or old tube box ~see our other listings for alternate hifidelity listening positions! best offer always enabled~~cali acoustics~ ~vocals instruments amps mics stereos lofi hifi warm bright vintage tone ecc88 e88cc apps+~~rode k2/ntk mics audio technica at-4060 liquidplatinum wooaudio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac +more~

1 x old stock hifidelity 6dj8 ecc88 amperex audio tube, limited run unique 68 curvegrail rated, 6922/e88cc circuit plugin w/ additional texture reveal and low level detailslively sound stage superb brighter ceiling for vocals tube mics preamps instruments + more4 available, full gm test 120/110~118/108~110/104~106/106 % mutual gm (100%+nos/65+good)authentic holland etch code! nos always give 100+hours to settle inships worldwide per piece well packed w/ plain or old tube box ~see our other listings for alternate hifidelity listening positions! best offer always enabled~~cali acoustics~ ~vocals instruments amps mics stereos lofi hifi warm bright vintage tone ecc88 e88cc apps+~~rode k2/ntk mics audio technica at-4060 liquidplatinum wooaudio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac +more~

Amperex 6DJ8 ECC88 A Frame Vacuum Tube Very Strong & Balanced^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^***** Tested on our proprietary tester , the E3444.Its a Triplett 3444 that has been enhanced.This tester uses regulated power sources for the bias, plate, & screen voltages, as well as modified operating & testing procedures.Filament voltage is also controlled. Tubes are tested in accordance with the manufacturers specifications; measurements closely align with a laboratory tester built to rigorously measure vacuum tube characteristics. Tubes can be accurately matched for gm & plate current at the manufacturers specified test points or at other specified test points.***** This tester was prepared by Mr. Paul Hart of Roswell, GA ***** ********************************************************************* Industry Bogey transconductance = 12,500/12,500 µmhos Industry Bogey plate current = 15.0/15.0mA Results = 13,200/12,450 µmhos ~ 13.1/11.1mA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ USA Shipping $6I have many other types of tubes ~ No Additional Shipping ChargesAll tubes GuaranteedThank you ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes 17J321

Pair of Vintage Amperex 6DJ8 ECC88 Vacuum Tubes Holland ***** Tested on our proprietary tester , the E3444 Triplett : Its a Triplett 3444 that has been enhanced. This tester uses regulated power sources for the bias, plate, & screen voltages, as well as modified operating & testing procedures. Filament voltage is also controlled. Tubes are tested in accordance with the manufacturers specifications; measurements closely align with a laboratory tester built to rigorously measure vacuum tube characteristics. Tubes can be accurately matched for gm & plate current at the manufacturers specified test points or at other specified test points. ***** This tester was prepared by Mr. Paul Hart ********************************************************************* Industry Bogey transconductance = 12,500/12,500 µmhos Industry Bogey plate current = 15.0/15.0mA Results = pictured USA Shipping $6 I have many other types of tubes ~ No Additional Shipping Charges All tubes r Guaranteed ov16 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

Sylvania JAN-CHS-6SN7W tube. U.S Navy Chrome Dome Amplitrex Tested, Balanced 92% gm Parallel T Plates. Tube was checked for noise and microphonics One of the well known attributes of the Amplitrex is the sensitivity it has for gas testing. It is likely other tube testers will show no gas at all for these tubes. Amplitrex AT1000 results. New tube spec mhos is 2600/2600 with plate voltage at 250 VDC.TubeEmissions %GM % mhosH-K uAGas mA6SN7W106/10092/922400/24000/0.8/.8 Acceptable practice is to have the gas below 1ma. So it is within the good range. Cleaning the tube is being left to the buyer since often cleaning the tube also removes labeling.Results are written on the tube. These can be easily removed with a moist paper towel. Domestic purchases can be combined to reduce shipping costs. International shipping is through the ebay Global Shipping Program. This program may not combine shipping. Contact eBay to find out. Items usually ship the day after payment is received.

Fisher Holland Amperex 12AX7 ECC83 Vacuum Tube ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Tested on an enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell, GA Industry Bogey transconductance =1600|1600µmhos Industry Bogey plate current 1.2|1.2mA Results =1325|1300µmhos ~1.01|.94mA The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us. ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????USA Shipping $6 I have many other types of tubes ~ No Additional Shipping Charges All tubes Guaranteed ?????? Thank You! ?????? 401~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

4 legendary large halo air bass transparent tone warm resolve amperex 6dj8 ecc88 audio tubesmatched 100% mutual gm! audio grade quad, lush mids great for vocals instruments amps mics+popular 6922/e88cc circuit plugin w/ additional texture reveal and low level detail ~see our other listings for alternate listening positions, bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~~cali acoustics instagram / cali acoustics dot com (soon!)~~cali acoustics~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

Amperex Harman Kardon 6V4 EZ80 Vacuum Tube Very Strong Balanced ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Tested on a Hickok 6000A Min = 800|800Results = 2950|2940 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ USA Shipping $6I have many other types of tubes No Additional Shipping Charges ~~ I will combine all Auctions purchased All tubes Guaranteed ?????? Thank You! ?????? ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes310

Sherwood Amperex 12AU7 ECC82 Vacuum Tube Strong & Balanced ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^***** Tested on our proprietary tester , the E3444.Its a Triplett 3444 that has been enhanced.This tester uses regulated power sources for the bias, plate, & screen voltages, as well as modified operating & testing procedures.Filament voltage is also controlled. Tubes are tested in accordance with the manufacturers specifications; measurements closely align with a laboratory tester built to rigorously measure vacuum tube characteristics. Tubes can be accurately matched for gm & plate current at the manufacturers specified test points or at other specified test points.***** This tester was prepared by Mr. Paul Hart of Roswell, GA ***** ********************************************************************* Industry Bogey transconductance = 2200|2200µmhos Industry Bogey plate current = 10.0|10.0mA Results = 1780|1850 µmhos ~ 8.2|8.9mA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ USA Shipping $6I have many other types of tubes ~ No Additional Shipping ChargesAll tubes GuaranteedThank you ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes803