4x BRIMAR 12AX7 Valves

Tested by AVO VCM Tester


Valve 1
Ia1 = 1.45(mA), gm1 = 1.6(mA/V)
Ia2 = 1.2(mA), gm2 = 1.5(mA/V)

Valve 2
Ia1 = 1.25(mA), gm1 = 1.55(mA/V)
Ia2 = 1.15(mA), gm2 = 1.5(mA/V)

Valve 3
Ia1 = 1.14(mA), gm1 = 1.5(mA/V)
Ia2 = 1.13(mA), gm2 = 1.4(mA/V)

Valve 4
Ia1 = 1.28(mA), gm1 = 1.55(mA/V)
Ia2 = 0.9(mA), gm2 = 1.4(mA/V)


NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V)


*** This valve has also been tested in amplifier without any noise. ***



Postage Costs
I am happy to post this item to worldwide and combine postage cost on multiple purchases.
















20231108L042