I was finally able to duplicate that pedal pretty closely- without all the hiss- on the Zoom B3. I always liked the sound when the attack switch was set on 1. It was great as a synth base (base, not bass) when the drive was cranked a bit and also works for a Kings X feel. Tweak to taste according to your bass but it's basically the Squeak->Graphic Eq (scooped mids)-> ZNR noise gate. The Squeak (ProCo Rat clone) seemed to be the only distortion that got in the range of the PD-7...really close. It has a nice bite in the high mids. FYI.