MI Audio Blue Boy Deluxe Overdrive
Schematic is avaiable HERE. …and by request another layout with with mods by asbestosaurus at FSB. R1 and R2 is the suggested values but they can be tinckered with for more or less overall output.
Overdrive
God City Gradient w. gain ctrl
Here is a quite simple Booster/Eq/light OD circuit designed by Kurt Ballou. More info and schematic HERE.
FREQUENCY CENTRAL / MATSUMIN: Valvemaster
A variant of the Matsumin Velvecaster, the Frequency Central Valvemaster. I really like Valvecasters, so I was looking forward to making this, but it just wasn’t working for me on the breadboard today. I might try a different valve / test the valve I’m using in a valvecaster circuit just to make sure it … Read more
Schumann Lion
Modified for normal DC power supply with onboard voltage inverter and voltage regulators. The layout is based on THIS schematic.
Wampler Black ’65
Schematic is avaiable HERE. The overkill 470uF power filter cap has been reduced to 100uF and the 10ohm series resistor for the power supply has been replaced with a series polarity protection diode.
Greer Amps Southland
Turns out the Southland is pretty much the same circuit as the Lightspeed, but with some hard clipping diodes thrown in the middle (and a couple value tweaks). Figured I’d make a new layout with space for the diodes. This layout uses the same drill template as the Lightspeed. I ended up building a 2-in-1 … Read more
Blackhawk Amplifiers Valkyrie Drive V3
This one was quite tricky to trace. Got the topology figured out quite quickly but but identifying some of the capacitor values was quite difficult with these Greenies with faded markings. Had to look at several units, all had some minor variations but I think the layout below is pretty much spot on. It is … Read more
