(!!!!) (SINGLE) 12AU7A GE NOS 1976 copper grid posts (9.4/8.8ma)

1 low noise tube) 12AU7A GE NOS 1976 (CK) (warm / smooth / sweet sound, not bright)

1 section) 9.4ma Gm=2100

1 section) 8.8ma Gm=2000

Tested on Amplitrex

– Unison Research

– Head-Direct EF1 preamp

– Allen & Heath VF-1 compressor

– Ray Samuels

– Eastern Electric DAC

– Lexicon Signature 284

– Bravo