(!!!!) (Best Value Pair) 6BQ7A RCA black plates NOS "D" and "U" getter 1957 (9/16ma and 9/14.5ma)

1 low noise pair) 6BQ7A RCA black plates NOS 1957

1 tube) 9/16.0ma Gm=7100/8800 (KI) Mar, 1957 "D" getter

1 tube) 9/14.5ma Gm=7100/8500 (KH) Feb, 1957 "U" getter

Matched on Amplitrex

Good Ma = 8-9ma

Good Gm = 6000-6400

 
(also see 6BZ7 and 6BK7B)

- Modwright Transporter
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