One of my favorite ‘unheard’ guitar effects is Ibanez’s AW7 from their super-ugly but also super-versatile early 2000s Tone-Lock series. The AW in the name stands for Auto-Wah, but this stomper is not simply a clone of the usual Wah/Filter suspects. The designers of the AW7 took the auto-wah idea as a starting point and then just kept piling on the features. What they ended up with was a pedal that not only allows you to select from two distinct Wah/Filters — a standard Wah and a Low Pass Filter (LPF on the pedal) — but also gives you a sweetly raunchy Rat-like built-in distortion circuit that can be either completely off, placed BEFORE the Wah, or placed AFTER the Wah. This placement option is a cool feature that only a few boutique builders still bother with, but it allows you to experiment with a huge variety of tones. Like what? The tone chefs at Gibson.com have a good description:
Wah-wah placed before distortion will allow the distortion pedal to interact with the peaks and valleys of the Wah’s signal. Wah-wah placed after distortion will sound thick and full, but will not be as harmonically rich. It’s worth a try just to see what it sounds like, and although most players swap right back, don’t let that stop ya! Some very famous players have gone the ‘gain-into-Wah’ route.
On top of all that, you can also use the AW7 as a ‘cocked’ or fixed wah by turning the Sensitivity knob down to zero, and you’ve basically got one pedal that does the work of four. Make that five, if you count the placement-changing ability that would require a separate effects loop.
Here’s a no-frills video I did showing some of the features I mentioned above: