Pre-amp
Sunn Beta Pre Amp
Ok, let’s release the beast. Two layouts. One stock for iether Bass or Lead cap values. And another one with a Beta/Lead switch. Since I’m not a big fan of offboard wiring I decidied to simplify things a bit. Lead cap values is always in circuit and with a 4PDT switch you can switch in … Read more
Xotic BB Pre Amp
Two layouts for this one. One stock and one with an additional Mid control. The clipping diodes is placed on the side of the board so you can easily add a diode clipper switch. Just omit the diodes on the board and add wires tat pad 1M and 1N to a DPDT switch where you … Read more
Ampeg vh140c Channel A Pre Amp
This one was quite a mess to get right since some of the schematics online was missing parts and/or had the wrong values. After some head scratching I worked from the factory schematic of the actual amp. However, did some mods without changing the charcter of the sound to much. First 9v/-9v operation is used … Read more
Mighty Nut – ENGL Powerball Pre Amp Emulator Lead Channel
Schematic and info HERE I added the” Low Mode” as well hence the additional Mode switch. And by request, a layout with a Klon buffer before the main circuit.
