Guptech Ottawa-Wah Auto-Wah

There Ottawa-Wah The GUPtech Envelope Filter is a filtered auto-wah pedal inspired by the classic DOD 440 Envelope Filter, offering a wah effect that triggers automatically based on your playing attack rather than an expression pedal. It features an UP/DOWN switch to either emphasize lower, thicker frequencies (ideal for guitar) or cut the bass to blend better into a mix, as well as Level (threshold) and Range (oscillation width) controls to adjust the sensitivity and sweep width.