(!!!!) (BEST OVERALL SINGLE) 12AU7A GE NOS 1958 copper grid posts (11.8/11.4ma) 1-3% section balance

1 low noise tube) 12AU7A GE NOS 1958 (warm / smooth / sweet sound, not bright)

1 section) 11.8ma Gm=2300

1 section) 11.4ma Gm=2200

Tested on Amplitrex

- Unison Research

- Head-Direct EF1 preamp

- Allen & Heath VF-1 compressor

- Ray Samuels

- Eastern Electric DAC

- Lexicon Signature 284

- Bravo