A used overdrive pedal packed with Allen Hinds' meticulous attention to detail has arrived!! The AH-booster is a smoother, more refined version of the Xotic AC COMP, which Allen Hinds has used for many years. With three different compression modes to choose from to match your guitar and amplifier characteristics, you can easily create a smooth sound. Based on Allen's favorite old AC-Comp pedal, this design revives the classic AC-Comp with the latest features, including 9-18 volt operation and improved tonal characteristics that deliver a tight yet smooth overdrive sound. • Incredibly touch-responsive overdrive • Adjustable ±15dB 2-band active EQ It supports DC 9-18V, and boosting the voltage to 18V reduces compression, increases headroom, and provides a punchier sound. • Internal DIP switches allow for adjustment of treble and presence. • True bypass. Specs: External dimensions: W60mm x D110mm x H40mm Weight: 270g (excluding battery) Maximum current consumption: 9VDC/8mA-18VDC/11mA Battery type: 9VDC (006P) AC Adapter (Optional): 9VDC-18VDC, Center Negative (Regulated) Input impedance: 1MΩ Output impedance: 10Ω