(!!!) (Slightly microphonic Single) 6SL7GT Ken Rad NOS 1945 era (2.6/2.3ma) Title: 6SL7GT Ken Rad NOS 1940”s

Slightly microphonic low noise tube) 6SL7GT=VT-229 Ken Rad grayish black plates NOS 1945 – microphonics are low

2.6ma Gm=1600

2.3ma Gm=1400

Good Ma range 2-3ma

Good Gm range 1500-1600

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