For settings, there is no simple> 3 knobs: Volume - Tone - Gain
No need for manual, everything is done instinctively.
This pedal has a lot of versatility: It is possible (after a while bending over) to dig up a well bluesy, vintage or fairly typical rock!
The sound is very nice (You can feel the button "VOX")
The lamp (famous 12AX7) gives a warm and also grain foil!
This pedal is ideal for both rhythmic solos as well for good rock 'n' roll!
There are many possibilities, but this pedal is definitely not for the metal.
I use a godin artisan st, a Start or a Yahama US AES-620 on a Fender Twin Reverb and it sounds!
I have been using 4 or 5 months now and I do not regret that choice.
I tried many pedals before falling on the "Big Ben" and it was a nice favorite when I tested
Obviously the price is quite exaggerated, but the quality is there.
In short, a very good overdrive pedal. It shines, it's clean enough and yet when you combine dévastarteur gain tone & the way! ... but always with great clarity in the sound of the notes, which I like personally very much.