(!!!) (SINGLE) 12BH7A Brimar UK rebranded GE short ribbed black plates 1968 (11/10.2ma)

1 low noise tube) 12BH7A Brimar UK rebranded GE short ribbed black plates 1968 (CY) large "O" getter halo

1 section) 11ma Gm=3200

1 section) 10.2ma Gm=3000

(best sounding are RCA, Brimar, Tungsol, GE, Sylvania, Super Radiotron Australia)

(nice in McIntosh and driver tube in Quicksilver 6C33 triode amps)

- VTL MB450
- Blackstar HT5 2009
- Valvet L1 preamp