1X Groove Tube 12AX7 / ECC83 – Amplitrex Verified See Pictures for sample Test Scores – Please note that the Groove Tube you receive will include printed test scores in the 85% to 100% plus spec range. All tubes are tested and matched on the Amplitrex AT1000 digital tester, in Fixed Bias mode. Buy with confidence – I accept 30 Day returns. 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%.
LOT OF 4 – 12AX7 – WURLITZER (AMPEREX) – VACUUM TUBES – TESTED
Pair Amperex Bugle Boy 12AX7 Foil D Getter Long Plate Tube Amplitrex Test NOS #1
Both Tested NOS on an Amplitrex AT1000 tube tester with the following results (As photographed): Tube 1- 133/108% ip 93/106% gm Tube 2- 83/108% ip 93/100% gm
2-Amperex 12AX7 ECC83 with 17mm Plates & Foil Getters Vintage Electronics
For your consideration are two Amperex 12AX7 ECC83 with 17mm Plates and Foil Getters. The tubes tesed at 1400gm/1200gm & 1400/1500gm.
Amperex ECC83 12AX7 Bugle Boy Preamp Tube Holland
Tests 1400/1600 where 875 is good in a calbrated Hickok 539-B tester.
Amperex ECC83 12AX7 Eico Preamp Tube Holland
Rare Matched Pair Of Amperex Electronics For Medicine 12AX7 Heerlen,Strong Test
• Etchings: Delta 0C1 and Delta 0B4 (desirable Heerlen date codes). EFM Amperex tubes are prized for their dynamic, engaging sound with excellent clarity. Test Results (Precision 10-12 tester – 65+ considered strong/NOS range).
MATCHED PAIR ZENITH 12AX7 ECC83 Foil Strip Getter VACUUM TUBES Tested 4.9268
Model 12AX7. Getter Foil Strip D Getter. Condition Tested as NOS. Minimum Good Value: 32/32. ALL TUBE AUDIO.