Controls
- Low Cut – Attenuates low frequencies
- Gain Trim – Controls the gain of the unit
- Level Low – Controls the overall output volume in Low Gain mode
- Level High – Controls the overall output volume in High Gain mode
- Gain Low (Internal Trimpot) – Sets the Gain in Low Gain mode
- Gain High (Internal Trimpot) – Sets the Gain in High Gain mode
- Voltage (Toggle Switch) – Selects between 9V / 27V operation
- Active/Bypass (Foot Switch) – Activates/Bypasses the pedal
- High/Low Gain (Foot Switch) – Selects between High Gain / Low Gain modes
Specifications
- Designed for a 1590BBM enclosure with top-mounted jacks
Documentation
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jcjakeway@live.com (verified owner) –
Well worth the effort. Its very versatile. I can use it with amp that’s already cranked to give it some extra love, or as a basic preamp that other pedals can hit and push further into overdrive. I used a 79 hFE 2N404 PNP Germanium transistor for Q2 instead of a OC71.
Kev Thomas (verified owner) –
Great board, easy to build and some amazing sounds.
The footswitch wiring is straightforward, even if you’ve only ever built pedals using 3pdt pcb’s.
One improvement I’d suggest is to show the orientation of the transformer on the PCB. The TY141P has a black dot to indicate pin 1, but there’s no marking on the PCB. I had to check the schematic to be sure (bottom left hole on the screen printed side, with the transformer on the left).