T-Rex Engineering FAT-SHUGA Reverb Guitar Effects Pedal with Overdrive/Boost Functionality (10178) Combination, 2-in-1 pedal with creamy overdrive/boost and built-in sweet-sounding reverb Boost function controlled via on/off foot-switch and adjustment knob to dial in the perfect amount of cream The Room/Hall switch and Reverb knob adjusts between a vintage, warm room and a three-dimensional, depth adding, hall reverb Amp-like breakup and overdrive along with pure ambiance adds soul and intensity to your sound Perfect for solo boost