FreeVST3MIDI pedal ready
A genuine expressive wah, full pedal travel with no dropout at heel or toe, three genre voicings, and a nonlinear ZDF core that growls when you dig in.
| Control | What it does |
|---|---|
| Pedal | The sweep. Mouse-drag it, or bind your MIDI expression pedal (above). |
| Voicing | Three genre voicings, different sweep ranges and resonance characters. |
| Set Low / Set High | Pedal calibration, see the box above. Can't miss it. Don't skip it. |
| Output | Level trim after the filter. |
| NERD: Q / Grit / Sweep | Resonance width, input-stage grit, and the sweep-law shape, the deep screws. |
The graph under the controls is the filter itself, not decoration. It draws the resonant peak the wah is sitting on right now, over a log scale from 100 Hz to 4 kHz, with the current peak frequency in the corner. The shaded band behind it is the range this voicing can travel, so Low Freq and High Freq stop being two abstract numbers, you watch the peak run between them.
Two things are worth watching there. The peak gets taller and narrower toward the toe, which is the wah opening into its vocal scream, that sharpening is the sound. And the curve never drops below the flat line, because the wah adds a resonant peak on top of your full dry signal instead of filtering it away, which is why switching it on doesn't cost you any volume.
Turn Q in NERD and you'll see the peak widen or spike. That's the fastest way to learn what these controls actually do.
The rig's WAH is this same engine plus two rig-only powers: Route (wah before or after your dirt) and Override Preset, a checkbox that makes YOUR wah setup global, so presets stop touching the wah entirely (the move when a physical pedal is bound). Wah can also go private per amp.
| Core | nonlinear zero-delay-feedback state-variable filter; drive-dependent harmonics |
| Travel | continuous full-range sweep law, no heel/toe clicks, no end-of-travel dropout |
| Control | MIDI CC (any), full calibration, smoothed position, bedroom-level clean sweeps |