One of the best 12AX7 ECC83 tubes you can buy! Low noise phono grade tube. Tube is NOS+ tested with BALANCED triodes. Simply good as it gets! Tubes codes shown in photo and are <9A1. 2x tested with included Amplitrex testing shown in photos.
Item Category: Vintage Electronics
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12AX7/ECC83 Daystrom 161 code Mullard MaxiPreamp2/TV-7 Tested (1) tube lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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NOS Amperex 12AX7 ECC83 mC1 Tube Foil D-Get BALANCED Bugle Boy 12ax7a B339
Here we have for sale is a very rare NIB/NOS+ tested Amperex Bugle Boy 12AX7 / ECC83 tube. Circa 1956 mC1 series tube with the 17mm long grey plates and huge foil strip D-getter. One of the best sounding 12AX7 ECC83 tubes you can buy!
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12AX7 Tube Pair Amperex Gray Plate Holland TEST Strong 86 % Tube Amp Guitar
Manufacturer Amperex. Tube Code I65 ^ 7B1 (^ = Amperex manufacture code) 7B1= 1967. Number 12AX7 ECC83. T he Tube tested at 86% (2.031 x 42.7 = 86.7 %). 32 = 65% of the value of a new tube. Rated 86 %.
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Rare NOS Amperex 12AX7A ECC83 Tubes MATCHED Bugle Boy 12ax7 7025 B339 PERFECT!
Here we have for sale is a rare set of NOS+ tested Amperex 12AX7A / ECC83 tubes. Amperex I65 series tubes with the Orange Globe logo label. They are NOS+ tested and make up a Platinum MATCHED pair with Platinum Balanced triodes.
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(1) NOS Amperex 12AX7A ECC83 Short Plate Dimpled Disc Getter Tests NOS Amplitrex
(1) NOS Amperex 12AX7A ECC83 Vacuum Tube |Orange Globe | Dimpled Disc Getter | Date Code I65 Δ0F4 | 1960 Heerlen Holland. Tested on an Amplitrex AT1000.
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Matched Rare Pair of Mullard 12AX7 Electrohome Tubes – Amplitrex Gm Scores 100%
All tubes are tested and or matched on the Amplitrex AT1000 digital tester, in. See Pictures for Test Scores. For best results – before you install your tubes be sure that your power is off, that the tube sockets are tight and cleaned periodically with a product like Detoxit 100%.
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MATCHED PAIR OF 1960 NOS RCA 12AX7 17MM LONG PLATE ANGLED SQUARE GETTER TUBES
Matched Pair of RCA 12AX7 Tubes. The minimum for a good 12AX7 on TV/7 is 32. 17mm LONG Grey Plate Angled square Getter with crimped end. Years ago, I put away a bunch of great Tubes. I have a NOS partial case of these tubes from 1960.
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12AX7A/ECC83 “RCA” Mullard MaxiPreamp2/TV-7 Tested (1) tube lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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3- MULLARD BLACKBURN 12AX7 ECC83 TUBE (I61-series circa 1961) Strong Trio?
All three tubes tested 140+/140+ on my Eico 666 tube tester where 80 is listed as a minimum value. Nice strong trio with gray plates and halo getter. Please email with any questions or concerns. Thanks for looking!