(!!!!) (Recommended Pair) 6U8A GE NOS 1973-1976 (19/18.8ma and 10/9.8ma)

1 matched pair) 6U8A GE NOS 1965-1967

1 tube) 13.5ma Gm=7200 and 11.0ma Gm=6200 1965

1 tube) 13.5ma Gm=7400 and 11.4ma Gm=5700 1967

6678=mobile-rated 6U8A

Matched on Amplitrex

- VOX

- Radford STA-15 Series III 1965

- McIntosh MX-110

- Grommes PHI-26