Electro-Harmonix EH 12BH7 12BH7A Gold Pin Amplitrex Matched Pair for Tube Amps
Tubes are matched for gm on a Amplitrex AT-1000 tester. EH GOLD PIN 12BH7A MATCHED PAIR. This is a well constructed 12BH7A, that tests and sounds excellent. They test consistently with very high gm readings.
NIB BRIMAR /Sylvania 12BH7A Short Black Plate Halo Get Tube 12BH7 Great Britain
12BH7A Short Black Plate, Halo Getter Tube. NIB BRIMAR for Sylvania. made in Great Britain.
Matched Pair GE 12BH7A Halo Getter Tubes 12BH7
These test 91/91 and 92/92 on my IT-17 tester, where new tubes usually test 85/85.
Matched Pair GE 12BH7A Horseshoe Getter Tubes 12BH7
These test 91/91 and 90/90 on my IT-17 tester, where new tubes usually test 85/85.
NOS Matched Pair RCA 12BH7A BLACK Plate D-Getter Tubes 12BH7 – NEW bulk surplus
Close Matched Pair RCA 12BH7A. Made by RCA for CBS.
2 x 12BH7A Sylvania Tubes*Grey Plates-Thick-O*Super Strong Matched Pair*#32
2 x 12BH7A Sylvania Tubes. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. Grey plates. What were your tubes tested at?. Thick O Getter. Bogey(100% or New) = 3100/3100 micromhos @ 11.5/11.5 mA +/- 10%.
2 x 12BH7A RCA Tubes*Grey Plates-O*NOS-NIB*#14
2 x 12BH7A RCA Tubes. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. Grey plates. What were your tubes tested at?. Bogey(100% or New) = 3100/3100 micromhos @ 11.5/11.5 mA +/- 10%.
RCA 12BH7A/GREY PLATES/O GETTER/MAXI TESTED
RCA 12BH7A/GREY PLATES/O GETTER/MAXI TESTED. Gain__19.2/19.3__gm__2.0/1.8 mA/V
Matched NOS Pair RCA 12BH7A Tubes Long Gray Plates O Getters Tests NOS Amplitrex
Matched NOS Pair RCA 12BH7A Vacuum Tubes | Excellent NIB Condition | Long Gray Plates | O Getters | Close Date Codes 1969/1970 Production. Tested on an Amplitrex AT1000.