Kick ass with a powerful, percussive sound on your clean guitar and melt steel alloy when playing lead with ultimate sustain "Smoothes out" volume peaks and provides endless sustain with ultra-stable dynamics Dedicated Sustain, Level and Attack time controls for awesome sound shaping First-class electronic On/Off switch for highest signal integrity in bypass mode Runs on 9 V battery or the PSU-SB DC power supply (not included)