Here’s a new video demo by Reverb.com about the Electro Harmonix Boost + Overdrive Operation Overlord.
From the manufacturer’s page:
A versatile, multi-instrument capable, stereo overdrive/distortion with a broad range of sound options and controls. With the Operation Overlord, whether you play guitar, bass, keyboards or pretty much any electronic instrument—-dialing in great drive sounds is fast and foolproof. Whatever your rig, the Overlord is your indispensable ally.