2 Amperex 6dj8 Vacuum tubes ***** Tested on our proprietary tester , the E3444 Triplett/Westmore 501 : Its a Triplett 3444 / Westmore 501 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 Falls Church , Virginia. ***** ********************************************************************* Industry Bogey Transconductance = 12,500/12,500 µmhos Industry Bogey Plate Current = 15.0/15.0mA Results = 9,700/10,200 µmhos ~ 11.6/12.1mA 10,200/9,900 µmhos ~ 13.2/12.6mA USA Shipping $6 I have many other types of tubes , Please Search My Store ~ No Additional Shipping Charges All tubes are Guaranteed Thank You #402 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

Matched Pair Amperex Mullard 6DJ8 ECC88 Vacuum Tubes Strong Balanced Code B6K5 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? The measurements provided were made on a Triplett 3444 that has been modified to test tubes in accordance with the original manufacturer’s stated test conditions, including bogey values. This includes the use of cathode bias where specified. This tester was prepared by Paul Hart of Roswell, GA.Further information is available on request. Industry Bogey transconductance = 12,250|12,250µmhos Industry Bogey plate current = 15.0|15.0mA Results =in pictures ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ USA Shipping $6I have many other types of tubes No Additional Shipping Charges ~~ I will combine all Auctions purchased All tubes are Guaranteed ?????? Thank You! ?????? ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes35

Amperex 6DJ8 ECC88 Vacuum Tube Very Strong Balanced ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Tested on an enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell, GA Industry Bogey transconductance =12,500|12,500µmhos Industry Bogey plate current = 15.0|15.0mA Results =12,500|12,300µmhos ~12.5|12.3mA 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 ~ Higher OverseasI have many other types of tubes ~ Just Search MY store No Additional Shipping Charges ***All tubes Guaranteed ?????? Thank You! ?????? ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubesJ29

I HAVE FOR SALE A RARE MULLARD AMPEREX E88CC GOLD PIN PINCHED WAIST D-GETTER 7L3 ?7K BASE CODE - HEERLEN NOVEMBER 1957 ??AVO VCM163 TESTED READINGS - Ia - 14.8/14.8 gm - 11.2/11.2 100% = Ia 15.0 gm 12.5 ? PLEASE SEE MY OTHER AUCTIONS ? (SEE PHOTOS FOR FULL DETAILS)

Amperex 12au7 Vacuum Tube********************************************************************* ***** Tested on our proprietary tester , the E3444 . Its a Triplett 3444 / Westmore 501 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, Georgia. ***** ********************************************************************* Industry Bogey Transconductance = 2200/2200 µmhos Industry Bogey Plate Current = 10.0/10.0mA Results = 1850/2020 µmhos ~ 9.7/10.6mA USA Shipping $6 I have many other types of tubes ~ No Additional Shipping Charges All tubes are Guaranteed #40 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

pair of old stock balance matched amperex 6dj8 ecc88 stereo tubes, limited run collectible 69spopular 6922/e88cc circuit plugin w/ low level texture reveal, popular orange label presence!realistic lively sound stage superb for vocals tube mics preamps instruments and morefull test leak short gas+ 99/95 ~ 93/91 % mutual gm (100%+nos/65+good)authentic holland etch codes! ships worldwide well packed ~see our other listings for alternate hifidelity listening, best offer always enabled~~cali acoustics~ ~vocals instruments amps mics stereos lofi hifi warm bright vintage tone ecc88 e88cc +more~~rode mics k2 ntk audio technica at-4060 liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac +more~

Vintage Amperex EZ81 6CA4 Radio Tube Very Strong & Balanced Labeled Wrong ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Tested on a Hickok 6000A Micromhos Min= 800/800 Results= 2830/2790 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ USA Shipping $6 ~ Higher Overseas I have many other types of tubes ~ Just Search my store No Additional Shipping Charges All tubes are Guaranteed 339~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

2 Baldwin 12AU7 tubes. Aplitrex tested strong, balanced. Black Plates. Most of the labeling is gone on these tubes. The Amplitrex AT1000 does a very good job of finding any gas. So much so that it is expect other tube testers would not measure any gas for these tubes. Amplitrex AT1000 results. New tube spec mhos is 2200/2200.Tubemhos Emissions %GM % H-K uAGas mA12AU72300/230088/89104/1040/0.0/.012AU72300/226083/90104/1030/0.2/.2, all labeling is missing Typically for small signal tubes like these gas current below 1ma is good. These are well be low that. Cleaning the tubes is being left to the buyer since often cleaning the tubes also removes labeling.mhos are written on the tubes. 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 Items usually ship the day after payment is received.

2 grail amperex dgetter 6922 gold pin audio tubeslegendary warmth / bass stage / detail clarity and mid euphony110/104~101/114 % mutual gm (100%+ nos/65+good) ~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 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~

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.

This listing is for an NOS Amperex 12AX7A dual-triode preamplifier tube. Made in Great Britain by Mullard, branded for Amperex in September 1953 (date code 3-40 indicates 40th week of 1953), tube is in near mint condition: good tip, clear, sharp, bright logo screen printing, clean pins, nicely balanced triodes. Hickok-tested at 120% of NOS. Photos show this exact tube under test on the English scale, needle is solidly, about 2/3rd, into the green, Good range (about half-way into the green, that is, about 2250 on the scale, indicates 100%). Actual gm readings obtained were 5500 mmhos for each triode where 5000 mmhos is NOS. See full test results below. Tube will be individually bubble-wrapped and sturdily boxed. Flat rate 1st Class Parcel to any US address. International Shipping calculated at auction end. I never charge a mark-up on shipping! Search my “Other Items” for other tubes you need, as I will combine shipping for even more savings. And now for the fine print:This is a no returns listing. Photos are part of the item description. Tubes were tested for mutual-transconductance, shorts, noise, and gas on my calibrated Hickok 532 tester. Your specific test results may vary based on tester and test conditions. Test results may not completely represent how the tube will function under working voltages in your equpment, and I cannot assure you the tube will meet your subjective sound preferences. Scrutinize the photos and the written description and ask any questions before you bid. Just know that once youve won the tubes, theyre yours. I have switched to a no-returns policy only because, in my experience, there is a small percentage of folks (maybe 15%?) who must enjoying trying out different tubes for a few days and when theyre finished playing with them, trying to get a refund claiming they are defective in some way, threatening negative feedback. If youre not one of that 15%, then bid with confidence and trust that youre getting a quality tube that is meticulously and accurately described. I have been a trusted eBay seller for more than 20 years. Check my 4300+ feedback and bid with confidence! RESULTS: Date Tested: Ju 2021Triode #1: Mmhos: 1500 (NOS = 1250) Percent: 120%Triode #2: Mmhos: 1500 (NOS = 1250) Percent: 120%Shorts: NoGas: No

For your consideration are two Amperex 6DJ8 ECC88 The tubes were tested on a Hickok 539c where the minimum reading is 7750gm and the reading for a new tube is 11,923gm. The tubes tested at 13,500gm/13,250gm, 13,000gm/12,500gm

Amperex 6DJ8 ECC88 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 = 12,500/12,300 µmhos ~ 17.3/17.1mA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 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 23J420

2 balanced amperex 6dj8 ecc88 audio tubes, reference grade high res dgetter sound stagetransparent imaging pro bass euphony great for mics amps stereos vocals instruments+full gm match 106/106~105/105 % gm (100+nos/65+good) and audio grade! circuit readycollectible hifidelity vintage audio, top ranked vtv 97 issue second harmonic resolve!flat response popular 6922/e88cc circuit plugin, rich warm grey mica intimate detailships worldwide w/ plain tube boxes well packed ~see our other amperex listings for alternate listening positions, best offer always enabled~~caliacoustics~ ~preamps tubemics stereos vocals instruments lofi hifi 6dj8 ecc88 e88cc 6922 and more~~rodemics k2 ntk woo audio liquid platinum aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac and more~

12AX7 ECC83 Amperex (Label Harman Kardon) Tested Audio Amp Preamp Audio Stereo Vintage Radio Vacuum Tube See Picture Box for Test Results , Short Grey Plate , D Foil Getter , Tested , Balanced , Made in Holland 1957 , Heerlen Factory We combine shipping Return Free Take a good look at the pictures as they give a much better description than words can If you have any questions, please ask them before bidding Shipping charge of $5.95 to anywhere within the lower 48 United States Thanks

2 early production amperex 6922 stereo tubes (e88cc) warm grey risers 1 detter / 1 ogetterhifidelity 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 amperex listings for alternate listening positions~~cali acoustics~ ~vocals instruments preamps tubemics stereos lofi/hifi warm/bright ecc88 6922 6dj8 e88cc+~~rodemics liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons bluemics echo conrad frontiers pathos vac and more~

balanced nos 68 military issue audio tube, pro vintage 6922 e88cc by philips amperex, rarelegendary usa clarity linear listenable sound stage famed crunch bass detailed ceilingsought after collectible! superb musicality for vocals instruments mics amps stereos+popular 6922/e88cc circuit plugin w/ additional texture reveal and low level details record stylefull gm test leak short gas+ 120/120 % mutual gm (65+ good / 100%+ nos)nos = always give 100+ hours to settle in, ships worldwide well packed! ~see our other amperex listings for alternate listening positions! best offer enabled~~cali acoustics~ ~lofi/hifi bright/warm vintage hifidelity tone apps e88cc 6dj8 ecc88 6922 stereos preamps vocals instruments tube mics and more~ ~rodemics liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac and more~

2 Amperex Bugle Boy Heerlen 6DJ8 ECC88 tubes 1966. Amplitrex Tested. Balanced Testing Notes:Heaters were on for at least 2 minutes before testingPlate voltage is applied for at least 1 minute before testing.Tube was checked for noise and microphonics One of the well known attributes of the Amplitrex is the sensitivity it has for gas testing. Most likely other tube testers will not measure any gas on these tubes. Amplitrex AT1000 results. New tube spec mhos is 12500/12500.Tube CodeEmissions %GM % MhosH-K uA leakageGas mA6D1100/100100/10112580/127000/0.2/.06D2108/10097/9612200/120600/0.2/.0 Acceptable practice is to have the gas below 1ma. These are well below 1 ma. Cleaning the tubes is being left to the buyer since often cleaning the tubes also removes labeling. Domestic purchases can be combined to reduce shipping costs. International shipping is through the ebay Global Shipping Program Items usually ship the day after payment is received.

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.

Amperex Mullard 12AT7 ECC81 Vacuum Tube Balanced ***** Tested on our proprietary tester , the E3444 Triplett/Westmore 501 : Its a Triplett 3444 / Westmore 501 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 Falls Church , Virginia. ***** ********************************************************************* Industry Bogey transconductance = 5500/5500 µmhos & Industry Bogey plate current = 11.0/11.0 mA Results = 4500/4225 µmhos ~ 9.3/8.4 mA Unlimited Combined Usa Shipping $6 All Tubes Unconditionally Guaranteed I have many other types of tubes - Just Search my Store Please let us know if you have ANY problems before leaving feedback ?????? Thank You! ?????? 511 ~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

For sale: 2 Beautiful Amperex 7119 E182CC vacuum tubes in white boxesTested with Hickok TV7, calibrated on February 8th 2023, with digital meter added. Tube 1 - 54@34.8Ma /54@36.8MaTube 2 - 53@36.4Ma / 52@38.0MaBoth tubes have same date code from 1962Results are nicely matched.This set comes from an estate of tube lover/collector, we have no knowledge if these are new or used, we have listed them as used. Shipping via USPS with signature. We combine shipping, if you buy two or more items please wait for final invoice

balanced bugle boy 60s audio tube, pro vintage 6dj8 ecc88 by philips amperexlegendary house resolve linear listenable sound stage famed air bass detailed precisionsought after collectible! superb musicality for vocals instruments mics amps stereos+popular 6922/e88cc circuit plugin w/ additional texture reveal and low level details record stylefull gm test leak short gas+ 100 %+ mutual gm (100%+ nos/65+good) authentic holland etch code, ships worldwide well packed! ~see our other amperex listings for alternate listening positions! best offer enabled~~cali acoustics~ ~lofi/hifi bright/warm vintage hifidelity tone apps e88cc 6dj8 ecc88 6922 stereos preamps vocals instruments tube mics and more~ ~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~

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+ (65+good/ 100+nos) and audio gradevintage collectible! sought after stage for preamps tube mics vocals instruments stereos+ships worldwide well packed w/ 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 liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac+ more~

balanced bugle boy 60s audio tube, pro vintage 6dj8 ecc88 by philips amperexlegendary house resolve linear listenable sound stage famed air bass detailed precisionsought after collectible! superb musicality for vocals instruments mics amps stereos+popular 6922/e88cc circuit plugin w/ additional texture reveal and low level details record stylefull gm test leak short gas+ 100 %+ mutual gm (65+ good / 100%+ nos) authentic holland etchnos = always give 100+ hours to settle in, ships worldwide well packed! ~see our other amperex listings for alternate listening positions! best offer enabled~~cali acoustics~ ~lofi/hifi bright/warm vintage hifidelity tone apps e88cc 6dj8 ecc88 6922 stereos preamps vocals instruments tube mics and more~ ~rodemics liquid platinum woo audio aesthetix cat audioresearch arc ear herron decco lector manley horizons echo bluemics conrad frontiers pathos vac and more~