Runoffgroove Professor Tweed

ROG Professor Tweed 7362a8aecd61

A request. Info from ROG: One of the often overlooked Fender amps is the tweed-era Princeton. They are excellent guitar amps, especially for blues playing. The major drawback was the 4.5 watt output wasn’t enough to keep up with a band. Again, using the technique pioneered by Doug Hammond, we decided to try to capture … Read more

Runoffgroove Umble

ROG Umble c1fc3418fc97

As. Requested. Info from ROG: There has always been much talk about the mystical hand-built amps that a particular man sells for around $10,000 each. Some claim these are the greatest amplifiers known to man, while others maintain it’s all hype. The runoffgroove.com team doesn’t know for sure, because neither of us can plunk down 10 … Read more

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

Runoffgroove Tube Reamer

ROG Tube Reamer 0b2f4dca9202

Simplified Tube Screamer workalike. ROG soundclips and info about the circuit: The first incarnation of the Tube Reamer was developed as a stripped-down, yet edgier version of the classic Ibanez Tube Screamer. We removed the input and output buffers as well as the tone control stage, plus implemented a different gain control. Many builders enjoyed … Read more