The Harvey DC is a dual channel distortion unit capable of everything from neutral low gain tones to full-on distortion. The Harvey has individual volume and tone controls to balance the two channels. Footswitch 1 (right side) turns the unit on and off, Footswitch 2 (left side) switches from channel A to B, and vice versa.
Features:

True Bypass Switching
9 Volt Center Negative DC jack (Boss Style)
Custom Powdercoat Finish.
Die Cast Enclosure
3 Year Warranty
Useful in applicationas that require limited space
Includes overdrive and distortion is one pedal
Alternating between OD and distortion requires the use of only one footswitch
Each channel includes independent treble and volume controls so you can compensate for the tonal imbalance that results from switching between light OD and heavy distortion
OD channel maintains clarity for rhythm parts, and provides full frequency range reproduction without a mid hump
The distortion channel is optimized for rhythm and lead by maintaining clarity
Both channels are optimized for maximum dynamics and minimum compression
The OD channel responds to the guitar volume control
Only the gain control is common to both channels. A compromise due to limited space
For applications that require distortion from channel two, the one gain control is sufficient since it provides a wide range of OD, from clean boost to almost distortion on channel one while having a reduced influence on the degree of distortion from channel two
The gain control can effectively pad the input sensitivity for use with active pick-ups, or for stacking with other effects