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

1 tube) 52.6ma Gm=11,450 red printing

1 tube) 54.6ma Gm=11,500 Philips by Sylvania

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