This is very versatile overdrive based on the original DOD 250( vintage grey version).

ODD Preamp 741 can be used as clean booster when the toggle switch is in the middle position.In that position there is no clipping.

The other two positions are for selecting germanium or silicon diode clipping, witch give very different tonal perspectives.The germanium diodes "sound" somehow softer and not so laud as the silicon, witch are somehow stronger and in your face.

The pedal accepts 9VDC power supply and 9V battery.True bypass( as always)