Wah pedal fairly standard whose only adjustment is a knob / switch to choose between 3 config.
Pretty simple configuration, unnecessary manual.
The effect has a good record on amp transos as lamp, you be the judge if you prefer before or after the distortion pedal on your Board, I do both to vary the sound.
I use it for a few years but I had a problem with what has prevented me from waher for a few months. A cable was burnt, after giving him a dressing, I rediscovered this. I tried a few models before it, it is not better, it is more (3 wah in one, as the name suggests). Having purchased an expo half price model, the price / quality ratio was good, I do it again this choice with experience.
If you have the means, prefer to another: it is versatile in comparison to a simple Vox or Cry Baby. Low function is also interesting and has a good record when we go back on the handle.
Wah wah very good with a true bypass, for he lost against some acute on the original sound (it's still relatively reasonable, if not use a true bypass external (boss ls2 ...) to cut the pedal fully when not in use ...) otherwise it's a very good wah, there is no drop in volume when it is used, the sound is closer to that crybaby vox (I a gcb95 too garish for my taste, I find the tri wah much better), it has a good range wah sound + three interesting to exploit a crybaby in the mind, an earlier vox, and a lower. With distortion it tears, there's like a little fuzz side ...
Good sound (see feature)
it allows me to make new sounds, evolving very much as the classic wah, the sound is effective and conducive to creative inspiration, you can win 10 db on the original sound is top top for the price.
10 for the price, the strength, the small housing for the 9v battery + power supply + possibility of three different wah ...