It can not be simpler, a volume, tone, gain and forward
I bought it used so no book which did not empch to market the device
Nothing to say this pedal is typ blues / rock its sounds great but I find it regrettable that it does not go far enough in winning, I see pchu Plutt rock hard rock.
I use a Vox AC30 and coupled to a distortion pedal which increases Whereas sustain.
I use it for several months, the only thing I regret is the lack of gain, and finally with all the pedals I've tried it before, it clearly above silent.
The report price is rather good quality, we pay particular brand and aesthetics of the pedal, but good for the price I pay this pedal I am fully satisfied