(!!) (Best Pair) 12SL7GT GE NOS 1973 (2.9/2.9ma and 2.7/2.6ma)

1 pair) 12SL7GT GE silver/chrome plates NOS 1973 (RH)

1 tube) 2.9/2.9ma Gm=2100/1900

1 tube) 2.7/2.6ma Gm=2000/2000

matched on Amplitrex

Good Ma range 1.8-2.5ma

Good Gm range 1500-1600

– Tom McNally Darling amp 2009