steve colman

I've got one of these sub zero 5 watt valve heads . first thing i noticed was its way too bright even with the treble turned to zero! The gain channel was too fierce and with humbuckers could hardly get the gain above 2. Changed the pre amp valve to a ecc82 that tamed it a bit better. Opening up the amp and looking at the volume pot on the circuit board there is a capacitor acting like a treble bleed bypass on a guitar vol. pot it is to the left marked C17 i removed this and its now a lot better still bright but nothing like the ice pick it was hope this is of help to anybody