Everything has been said, it's a wah setting possible without externally

UTILIZATION

Usage is very simple. A manual for what?
Some point to the problem of engagement of the end, it is possible to better adjust the switch very easily (especially if it is changed, see below).

SOUND QUALITY

After several tries, this is my favorite wah, less aggressive, with a preference for clean sounds.
I advise "just" to change the switch to install a true bypass, the losses are too large for my taste when the effect is off (I never plugged in for the pieces for which I used). It is a pity that this was not standard, given the cost of the operation. But it gives pleasure to do yourself, and then we can leave it connected.

OVERALL OPINION

Overall a very nice pedal, simple and solid.
A little regret for the bypass to change.