Got some in stock in the store I work at today and spent some time with the ProValve into a 65 amps London 1x12 combo. The London has virtually no gain and this ProValve lit that som bitch up!!! I normally dont like high gain pedals as most just blanket the amp over and kill the amp natural overtones. having that second channel for leads is a godsend, it is perfect. The ProValve added tons of gain and ACCENTED the natural tones of the amp. Its like adding 2 natural high gain channels to a clean amp. This one def seems suited for a totally clean amp. SO much can be done with the vol knob on the guitar. I absolutely fell in love with this one and will be gigging it soon. Pay deduct here we come.