(!) (USED PAIR 1950”s) 6BA6 RCA black plates used/test like new 1950”s (10.6ma and 10.8ma)

1 pair) 6BA6 RCA black plates used/test like new 1950”s in white boxes

1 tube) 10.8ma Gm=4700 (1954)

1 tube) 10.6ma Gm=4400 (1956)

Recommended for:

– RETRO INSTRUMENTS STA-LEVEL