(!!!!) (Single) 12BH7 Tungsol branded Shield gray oval plates “”U”” getter halo NOS 1961 (11.8/16.5ma) (Highest mA and Gm) Title: 12BH7 Tungsol Shield

1 low noise tube) 12BH7 Tungsol branded Shield gray oval plates “”U”” getter halo NOS 1961 in white box

1 section) 11.8ma Gm=3000

1 section) 16.5ma Gm=3300

Tested on Amplitrex

– Octave M90 mono amps (
– 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