(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1966 (77ma)

6L6Y RCA metal can (Y=brown bottom) NOS 1966

77ma

Gm=6150

Good Ma range 60-70ma

Good Gm range 5500-6000

– Gates SA-39B compressor 1958
– Fender Twin Reverb UltraLinear 1981