(!) (slightly microphonic) 6SL7GT=VT-229 RCA round black plates like new 1942-1945 era (2.4/2.6ma) Title: VT-229=6SL7GT RCA 1940”s

1 slightly microphonic low noise tube) VT-229=6SL7GT RCA round black plates like new 1942-1945 era reboxed

1 section) 2.4ma Gm=1600

1 section) 2.6ma Gm=1700

Good Ma range 2-3ma

Good Gm range 1400-1600

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