(!!!) (Recommended Pair) 6BQ7A RCA black plates NOS 1967 (16.5/14ma and 15.5/18ma)

1 low noise tube) 6BQ7A RCA black plates NOS 1967 same date ccodes

1 tube) 16.5/14.0ma Gm=9500/8000 

1 tube) 15.5/18.0ma Gm=8500/10,000

Tested on Amplitrex

Good Ma = 9ma

Good Gm = 6000-6400

(also see 6BZ7 and 6BK7B)

- Modwright Transporter
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- Don Allen
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