This is his Twin Toggle Super Mod to the Black Russian Muff. I really really dig this pedal. I have two and am thinning unneeded pedals right now. It's a smoother and creamier than the standard...and it has two toggle switches to boost bass and mids. Oh yeah...blue LED. Velcro on the bottom. Will ship in original box. Billy doesn't make these mods anymore (so I'm told)...and obviously there won't be too many more out there since the EHX discontinued the pedal. He sold them for $125 + shipping. Asking $115 shipped.