(2) Westinghouse 12AU7A Tubes Long Black Plates 'D' Getters. Tube 1 tests at 104/98 and tube 2 at 90/90 with 56 being the minimum score for a good tube...
Test Results: Mu/Gain: 16.2 / 16.7 Transconductance: 1.59 / 1.50 mA/V Noise: -84.8 / -85.4 dB Microphonics: Low microphonics — the tap is audible when the tube is tapped,...
One pair of 12AU7A, by Mullard of Hamburg for Webcor (a tape recorder co.). The Hamburg Mullard codes: RoL5 and RoA4 (R- a Hamburg code). Most of my tubes...
One pair of 12AU7A, by Mullard of Blackburn for Webcdor (a tape recorder co.). The "Made In Gt.
2 x 12AU7A RCA Tubes. Tested on enhanced Triplet E3444 Laboratory Tester prepared by Paul Hart of Roswell Ga. Made in USA for Tektronix. Tubes may also be operated...
Top Horseshoe Getter. Narrow Rib Black Plates. Vacuum Tube. sections of a single tube. Within 3% I consider to be 'Balanced'. Tested at 65/81. Clean tubes will radiate heat...
This item is one lot of two tubes 12AU7 ECC82 Toshiba Hi-Fi Made in Japan. Grey plate, O-Getter, original boxes. Very nice sound.
One matched pair of 12AU7A clear top tubes by RCA.
Pair of new old stock GENERAL ELECTRIC branded MULLARD 12AU7A / ECC82 tubes. Made in Great Britain. FREE U.S. SHIPPING ! Thank you for looking !!!
MATCHING PAIR NEW GE 12AU7A / ECC82 HiFi Ham Radio Amp Vacuum Tubes. Tubes have matching production Date codesCD 188-5. Tubes checked good on a EICO 625 tube checker.