(!!) (Best Value SIngle) 7199 Sylvania NOS 1970 (15ma pentode/6.2ma triode)

1 tube) 7199 Sylvania NOS 1970

15ma and Gm=7100 (pentode section) very strong

6.2ma and Gm=1800 (triode section) fair

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

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

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