(!!!!) (Best Pair) 12AU7A GE NOS 1968-1969 (9/10ma and 9.2/9.2ma) (Same Gm) (Warm and smooth)

1 low noise pair)  12AU7A GE NOS 1968-1969 (warm and smooth sound)  1 tube) 9.0/10.0ma Gm=2000/2000 (EZ) 1969 1 tube) 9.2/9.2ma Gm=2000/2000 (HY) 1968   Matched on Amplitrex Good Ma range 8-10ma Good Gm range 1800-2200   recommended for: - Backert Labs Rhumba 1.1 - Unison Research - Head-Direct EF1 preamp - Cary Audio SLP74 - Allen & Heath VF-1 compressor - Ray Samuels - Eastern Electric DAC - Lexicon Signature 284 - Bravo