Edit after 1 year:
The thing has began to make a horrible scratching noise, even when playing clean, so I reduced quality down to 1 star. Honestly, just get the standard one or the 60's or whatever; this isn't worth your money .
The "adjustable" wah-wah has maybe two good wah-wah sounds. the variable Q is a pointless control, the whole point of a wah is that you control the range with your foot. The volume is also pointless, the last thing you need is another volume control in your rig. The "boost" function turns it into a wah-volume pedal hybrid, but it makes your tone murky and undefined. There are also these little knobs on the bottom of the pedal that are confusing to use. In the end, this pedal is versatile, but isn't specialised. Just buy a normal wah. also, the adjustment knob makes loud popping noises when used.