Got my Power Driver last week. It's S/N 001! Power Driving GTO, not included... Tested it at near max amp volume (lOOk out!) with my P90 equip'd. Epi, into my Vox AC15. I'm enjoying the hell out of this one. In brief, it's a Boost pedal w/Bass & Treble controls. It can stay absolutely clean with the drive turned down, only after 12:00 or so does the drive come in. It goes from light OD to heavier OD to near (but not really) fuzz when maxed. Cleans up very well like all of Scotty's pedz. The bass & treble alone (like the BJF Sea Blue EQ -- great pedal!) makes it worth the price of admission. It simulates for me power tube distorion. Very big and focused but not too edgy. From other reviews I've heard it should be great as a stackable drive. It has a TON of output, so be careful! This is a step-up from where Scotty was going with the Boost Royale, tho' I think he said that pedal will come back some time soon totally revamped and over-engineered! Here's an excerpt from an email I wrote to a friend last night, asking about the Power Driver: As far as the Power Driver goes, I just plugged it in today at a good volume for the first time. It's pretty killer. The Drive pot stays clean for a very long time so that you get a lot of range there. After 12:00 it shows some edge but not until 3:00 does the real crunch come in (as the Si trannies- Q1/Q2 begin to saturate) and it eventually heads into a very heavy overdrive, near fuzz. I thought it wuz fuzz at first, but it really isn't, it's more like some thick drive, maybe even like tube saturation, ala the Varidrive or the Chandler Tube Driver, but still, not exactly like that either. Clearer than those but with the same girth. You could say it's emulating power tube distortion, thick yet clear and not too smeared in the mids. It's something you'd have to experience to see if you like it. This pedal can put out some serious volume, so it must be considered as well to what it will do to your front end (and resultant harmonics) if you use it that way. But the best part is the very capable EQ. It adds a lot of treble if you crank it, w/an almost treble booster-like quality. I nailed that Clapton intro to "Let it Rain" with my Gibson! That was with the treb. cranked. It had a lot of zing but didn't get nasty. If you add just a little treble, it's very sweet. The bass is also voiced very well, and creates this big but not flubby bottom. So overall, I'd say it is a boost pedal and a tone-shaping (EQ) device, with the option of adding gain to the signal, and lots of gain if you crank the Drive pot. It doesn't sound like anything I can think of... it can sound like a fuzzy overdrive (!) or it just does boost and EQ if you like... or of course, somewhere in-between. Rock on!