How to get a wah tone — and 31 famous songs that use it, each with researched amp settings and gear you can adapt to your rig.
Dialing wah: A wah is a swept bandpass filter — it's about the sweep, not one position. Rock it with the rhythm for the classic vocal "wah", or park it half-open (a "cocked wah") for a fixed honk like Kirk Hammett's leads. Before distortion = vocal and aggressive; after = smoother.