Visual Sound XO Dual Premium Overdrive, Overdrive/Distortion for electric guitar, 2 independent overdrive/distortion channels with Drive, Tone and Volume controls,, 3-way-clipping (diodes) switch (right channel), 3-way-bass switch (right channel), Clean-Mix control (right channel),, Bass-control (left channel), True Bypass, Footswitches with gold-plated relays, Pure Tone Buffer selectable per channel,, Separate in- and outputs per channel, 9V-operation via power supply (Minus center, Plus ring) or battery,, Dimensions: 13 x 11.3 x 5.2 cm, Weight: 658 g