The RevivalDRIVE Compact is a versatile overdrive that captures the authentic tone, feel and response of a range of classic non-master volume valve amps.Inside, it houses an unabridged valve amp signal path recreated in analogue electronics, including the preamp, phase inverter, push-pull power amp and rectifier stages plus a speaker-emulating reactive load. By altering the way these stages behave and interact, the RevivalDRIVE Compact’s user-friendly controls provide instant access to a wealth of British and American amp voicings, from clean to fully cranked, while powerful EQ compensation controls will make sure it sounds great with a wide variety of amps. Controls: Gain: sets the amount of overdrive; Output: sets the overall output level; Blend: adjusts mix from 100% overdrive to 100% dry (clean boost), simultaneously adjusting gain to maintain a musical blend of clean and overdriven signals; Lows: controls the overdrive’s low-frequency characteristics, from fat and fuzzy Tweed-style distortion to tight and defined British drive; Highs: provides continuous adjustment through a range of classic Fender- and Marshall-style preamp voicings, progressively increasing mids and highs; More/Pres (clockwise): above 12 o’clock, functions like the classic Marshall Presence knob, releasing high frequencies from the effects of negative feedback; More/Pres (counter-clockwise): below 12 o’clock, progressively reduces negative feedback around the power amp, increasing gain and altering the pedal’s transition from clean to overdriven in response to playing dynamics; Post-Drive EQ: three preset EQ curves (flat power amp, Fender Blackface, Marshall) and a continuously adjustable filter adapt the pedal’s output to suit your clean amp settings. Additional features:• Ultra-high input impedance• Silent switching• High-quality “signal-conditioning” bypass mode• High-current, low-noise electronics• Premium components throughout• Advanced power supply filtering and protection• Runs off standard 9VDC adaptor • Designed and built in England385