Bought one of these last week and been messing around with it. I've owned a EBS Multidrive and a Tubeworks Blue Tube 903, both of which are very good overdrive pedals. This time around I was looking for a pedal which enables you to keep your "clean sound" intact and adds/blends the overdrive over your clean signal. Ofcourse, you can also have your entire signal overdriven with out your clean signal coming through if you want. I was also looking for a pedal which would do its job without any loss of bottom. This is it. The four controls are effective and very intuitive. gain: adds overdrive, tone: adjust tone of overdrive, blend: blends clean signal with overdriven signal level: adjusts overall volume of the signal which is being sent to the amp. It's no $60 pedal though. With an MSRP of $179 and a street price in the $120s, it's not cheap. The pedal appears to be constructed well and very durable. All in all this pedal is a good value.