The TS808DX - Tube Screamer w/Booster from Ibanez is a guitar effect overdrive pedal designed to emulate warm, natural tube overdrive. It has uses in many genres and environments, whether playing country or metal, in a bedroom studio or on stage in an arena, this pedal has something to offer. 

It features the JRC4558D IC chip for that signature soft-clipping sound and a boost circuit that is capable of adding up to 20 dB at the tap of a switch. The pedal also incorporates two individual true bypass switches for total independent control, allowing the Overdrive and Booster to be used separately or in conjunction with each other. A toggle switch places the boost either pre or post the overdrive section and a rear-panel switch offers the option of 9-volt or 18-volt operation. It is powered by a single 9V battery or an optional 9V AC adapter (Ibanez AC509 sold separately).