(!!!) (Single) 7199 RCA Black Plates NOS 1964 (10.2ma pentode, 12ma triode)

1 tube) 7199 RCA Black Plates NOS 1964 (AA)

pentode section (10.2ma) Gm=6100 good

triode section (12ma) Gm=2300 excellent

Good Pentode Section 10-12ma Gm=6000-6500

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

for: 

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