So I use two Gain Changers - one set for high gain and one for low gain, then I saw today that they did a limited run black version of the GC. I pulled the trigger on one of those this morning. It should be obvious to most that I'm basically a Barber overdrive collector at this point. I think I have everything they've made. Excited to get this one! I still to this day regard the Gain Changer as one of the best - if not THE best - overdrive pedals ever made.