(!!!) (Slightly Microphonic Single) CV1985=6SL7GTY Brimar UK tests like new 1950's (2.2/2.2ma)

1 low noise slightly microphonic tube) CV1985=6SL7GTY Brimar UK tests like new 1950's in CV1985 box 

2.2ma Gm=1400

2.2ma Gm=1500

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