Runoffgroove Big Daddy

ROG Big Daddy OD 00c340b1d8ea

Continuing Grace Overdrive article at ROG: During the testing of this circuit design (meaning the Grace Overdrive), the thought occurred to try a Jfet gain stage before the 386, instead of the buffer. The impedance would still be high and the 386 would see more signal and clip harder. The result is a pleasing grind and … Read more

Runoffgroove Grace Overdrive

ROG Grace Overdrive 4931f1099c08

From ROG: A few months ago, Aron Nelson released the Smash Drive. The circuit ingeniously used an LM386 audio power amp chip to produce great distortion sounds. Aron based his work on that of Tim Escobedo. Tim’s Stupidity Box was another great sounding unit and beautifully simplistic. The Smokey Amp by Bruce Zinky was another design … Read more

Supa Nova

Supa Nova 02b055902ac8

Info from circuit designer J. Nagy: The Supa Nova is a very low to pretty high gain, tube-ish, distortion pedal that relies on a MOSFET (BS170) to overdrive two JFETs (J201). The tone controls are designed to provide adjustment to the middle and upper frequencies. Voltage at the drains of Q2 and Q3 should be about 5.4 and 4.7, … Read more