(!!!!) (Recommended Pair) 6BQ7A RCA black plates NOS 1964-1968 (9.2/11.2ma and 10.2/11ma)

1 low noise pair) 6BQ7A RCA black plates NOS 1964-1968

1 tube) 9.2/11.2ma Gm=6500/7600 (CC) 1968

1 tube) 10.2/11.0ma Gm=6600/6800 (AF) 1964

Matched on Amplitrex

Good Ma = 8-9ma

Good Gm = 6000-6400

(also see 6BZ7 and 6BK7B)

– Modwright Transporter
– Schiit Lyr amp 2011
– Don Allen
– Donald North Audio (DNA) Stratus