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(!!!!) (BEST RCA PAIR) 7199 RCA black plates NOS 1960's, 1 tube branded Tungsol, same build

(!!!!) (BEST RCA PAIR) 7199 RCA black plates NOS 1960's, 1 tube branded Tungsol, same build

$ 118.88

1 pair) 7199 RCA black plates NOS 1960's, 1 tube branded Tungsol, same build

1 tube) branded RCA solid round disc getter halo

8.5ma Gm=2200 (triode)

11ma Gm=6500 (pentode)


1 tube) RCA branded Tungsol hoop "O" getter halo

8.0ma Gm=2100 (triode)

10.5ma Gm=6800 (pentode)

 

tested on TV-7

RCA 60/42 triode 80/50 pentode

RCA/Tungsol 63/42 triode 77/50 pentode

 

 

Matched on Amplitrex

Good Triode section 7-9ma Gm=1900-2100

Good Pentode Section 11-12ma Gm=6000-6500

 

- Bogen BD-212
- Dynaco ST-70, SCA-35
- Ampeg B25, B25B
- Heathkit AA-111
- Stromberg Carlson
- Ampex Concerto 1961
- Scott LK 150

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