6BM8 Philips Miniwatt by Valvo Germany used 1961

1 tube) 6BM8 Philips Miniwatt by Valvo Germany used 1961 in white box

1 section) 2.1ma Gm=2300 triode section 

1 section) 24ma Gm=4900 pentode section 

Tested on Amplitrex

1 section triode) Good used Ma = 1.8-2.0ma and Good Gm=2000-2500

1 section pentode) Good used Ma = 25-30ma and Good Gm=5000

Audio Note preamps and DACS (2.1B, 2.1C)
Audio Note DAC 3.1 Signature/Modified
Audio Note L2 Custom linestage - Response Audio, NY (2008) (responseaudio.com)
Shindo Concertino 300B amp
Eastern Electric Minimax
Eastern Electric Minimax BBA "Buffer Booster Amplifier"
KLH Eight radio 1960-1962