Guitars of Love

DOD 250 OD/pre-amp in action...

At right are screen grabs the of the overdrive pedal captured on an oscilloscope with an A440Hz sine wave. The signals greatly increase in complexity with complex harmonics.

Low drive with little or no change in sound:


Slight OD with rounding similar to a valve or FET:


More OD:


Maximum drive resulting in a square wave O/P: