DUAL BIAS on the back panel allows you to set the bias of output tubes. It is currently
set to 32mV per tube. Use a Digital Multimeter. When changing tubes, always start by
turning the BIAS 1 and BIAS 2 pots fully counter-clockwise, a speaker load connected,
and MVC set to zero. As you turn the BIAS 1 and BIAS 2 pots SLOWLY clockwise, the
tubes with starting drawing current.
Jump back and forth between the two output
tubes and bring them up together.
MAINS power select is below the AC input jack, switchable between 120VAC and
240VAC.
FREDRIK & MARTEN AMP SETTINGS
MVC Pulled 8,5 (3 o’clock)
Bass 4
Middle 7
Treble 4
Gain II 10
Gain I
between 3 and 5
Presence 0
