Works perfectly, but EQ2 panel is fading an the dip switch has one switch that's a bit chewed. I bought it in this condition originally and I've never had any functional issues.

Origin Describes this as

"A dual-channel overdrive pedal that accurately recreates a wide range of classic, non-master-volume valve amp tones, including distinctive power amp sag and “ghost tone” effects.

Under the hood, it contains a complete and unabridged valve amp-style signal path, with simulated preamp, phase inverter, power amp and rectifier stages. By successfully recreating the sophisticated interaction of these stages – and by imitating the complex relationship that exists between an amplifier and its mains power supply – the RevivalDRIVE puts incredible tone-shaping power at your disposal.

At the same time, the RevivalDRIVE incorporates a range of controls that will tailor its response to suit the amp you’re plugging into. Unlike the vast majority of overdrive pedals, the RevivalDRIVE is genuinely designed to sound fantastic with any amp.

In short, we believe that this is the best-sounding, most flexible overdrive pedal ever created."