Bloom is Bloom…it’s fuzz+gain+definition. It increases gain and note separation. Rather than going mushy or washy, it holds together pretty nicely when cranked. I think it holds up well with lower tuning because of this.
Head is headroom. As you turn it right, it becomes less clipped, but also louder and more open (favoring transistor fuzz over clipping diodes). So while turning right reduces how clipped it is, it also increases mass. So it does some big thunderous chords. Really works with big menacing chords…it lets you get this full-spectrum mass attack that’s pretty cool.
Body (Body and High work together). Body shifts a huge amount of lows in/out of your sound…but leaves your highs totally in tact. (Unlike Tone controls that make you choose either [bassy and dark] OR [bright and thin]). Body also adjusts fuzziness.
High lets you then control your highs, separate from Body. Set your lows and fuzziness where you want it, then adjust your highs.
Open is a switch, adjusting clipping and transistor biasing…it adds/removes extra clipping and compression. It controls texture, lets you choose whether you want crunch with just-a-hint of gate, or whether you want things wide-open. The Headroom knob works regardless, but this switch is kind of a pre-shaper control that’s pretty effective in getting clipping where you want it.
Hand-wired in the US.
9v negative tip adapter power. (No batteries.)
Rugged aluminum enclosure. (4.7″ x 3.7″)