BASIC AUDIO Tri Dirty Booster

Muff variant made by Honer in the Mid 70's.

Sweet, non-boomy muff tones with clarity and
a larger range of lower gain tones that don't get dull
as the gain is dialed back. Wide range Tone control with
a few sweet spots and useable throughout the tone knob's range. No mud at the full bass setting and still sweet at the high end.