Xotic's iconic clean boost pedal is back -- dressed in its original black-and-white housing -- to celebrate its 20th anniversary. The Xotic RC Booster Classic delivers the same ultra-transparent +20dB boost. An adjustable +/-15dB 2-band EQ enables you to dial in your tone. You can also use the EQ to compensate for tonal changes resulting from the volume boost or to match the response for multiple guitars. Can run at 9 or 18 volts.