(!!!) (Best Single) 6BQ7A RCA black plates NOS "D" getter 1961 (8.2/8.4ma) 1-3% section balance

1 low noise tube) 6BQ7A RCA black plates NOS "D" getter NOS 1961 (MC)

8.2ma Gm=6000

8.4ma Gm=6200

Tested on Amplitrex

Good Ma = 8-9ma

Good Gm = 6000-6400

 
(also see 6BZ7 and 6BK7B)

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