(1) 1964 JRP-12AT7WA Tubes TRIPLE MICA Mil-Spec Low Noise Fisher 400 Fender Amps

Specifications

Fantastic mil spec triple mica low noise ruggedized version of the 12AT7. Excellent for both high fidelity and guitar amplifiers. These were tested on calibrated TV7-D/U military tube tester with results written in tubes in areas not to disturb logos and can be easily removed with alcohol and napkin. TV7 test results: Tube1=75/83 Tube2=83/82 Tube3=68/86 (On the TV7 tester, a reading of 50/50 is equivalent to 65% Gm/Mutual Conductance. These tubes are very strong)

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