The idea for this amp came after playing some gigs in the wine country of Sonoma County, Ca., my current home. My ’65 Deluxe Reverb was just too loud for the kind of gigs and venues many of us play now. I needed a simple, light, lower powered amp that could do some nice pedal friendly cleans but also ramp up to some killer tube based drive.
The Karma SIX12 is a true Class A, parallel single-ended amp, available as either a head or combo. The control set is simple and straight forward – good for overall shaping – progressing logically from clean to driven.
For the cleanest tones, turn Negative Feedback (rear panel) ON, low cut switch DOWN, Volume 9-11 o’clock, Tone as needed to shape the highs, Mids and Saturate at minimum.
From there, dirty things up by any combination of Negative Feedback OFF, low cut switch UP, increased Volume, Mids, and Saturate.
Putting a second 6V6 power tube in parallel with the first (switched to 12) yields a slight boost in volume without affecting tone – perfect for later in the night when the band volume comes up.