1 pair) 6BQ5 Sylvania gray plate NOS, 1 tube rebranded Philips same build

1 tube) 48.0ma Gm=10,300 Sylvania branded Philco 1960”s

1 tube) 49.5ma Gm=10,700 Philips by Sylvania 1970”s

Matched on Amplitrex

Good mA range 40-48ma

Good Gm range 10-12,000

Recommended for

– BLACKHEART BH5H
– Bad Cat Black Cat 2003
– Shindo Montille
– RM10
– Gibson GA-5 Skylark 1966
– VOX
– Kustom