standard size preamp module format for acoustic guitars – but with hex-subbass effect and mic!
- small microphone on a adjustable wire
- mic-preamp and notch filter (improving feedback)
- mixer with tone control
- 4 sliders: Main Vol / Polybass effect Vol / Mic Vol / Synth Vol
- Bass / Treble rotary controls
- 2 buttons to switch either PBass effect and Mic or GK Up/Dn (choice by jumper)
- optional wooDI-M board and jumper/connector to switch it off
- 6pin header for simple output jack and battery
- 16pin header for GK 13pin out (single 13pin Output board or board with 2 1/4″ + 13pin DIN)
- lasered and painted 3 layer plywood front, bendable in the sense of the curve of the guitar
the Polybass-P board is not included and essencial!









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