(!!!!!) (Good Value Pair) 12BH7A Sylvania gray pinched plates NOS and used 1970 era (7.6/8.0.4ma and 7/7ma)

1 low noise pair) 12BH7A Sylvania gray pinched plates NOS and used 1970 era

1 tube) 7.6/8.0ma and Gm=2500/2600 Sylvania NOS

1 tube) 7.0/7.0ma and Gm=2400/2400 Sylvania branded Westinghouse used/good

 

- detailed and open

recommended for:

- Octave M90 mono amps (http://tubeworldexpress.shop/)
- Quicksilver Audio V4 mono amp
- Quicksilver Triode amp
- Thor
- Doshi Alaap preamp
- Art Audio Diavolo
- Vexo S40 amp
- Art Audio Carissa Signature amp
- Art Audio PX25 amp
- Universal Audio LA2A