Description
Born from a collaboration between Bob Bradshaw’s Custom Audio Electronics and Dunlop’s Crybaby design team, the MC404 rethinks the classic wah as a switchable dual-voice tool. Flip the side kickswitch and you’re choosing between two Fasel inductors: one voiced for high-end emphasis and sweep clarity, the other tuned for low-to-mid resonance and a thicker, vocal growl. That range means you’re not locked into a single wah character across a set—cut sharp, glassy sweeps for lead lines, then drop into a fatter, throatier tone for rhythm work without swapping pedals.
Built into the same chassis is an MXR MC-401 Boost/LineDriver, switchable independently via its own kickswitch, so you can push extra gain into your amp or the rest of your chain at the moment you need it—whether that’s kicking a solo forward or compensating for signal loss further down a long pedal run. Bright LEDs flank each footswitch, so status is visible on a dark stage at a glance.
Under the hood, the MC404 is built for reliability and fine-tuning: true hardwire bypass keeps your signal clean when the wah is off, a long-life CTS potentiometer handles the sweep, and internal trim pots let you dial in “Q” resonance and gain to match your rig. It’s the kind of depth and build quality that’s earned Dunlop its reputation as the standard-bearer in wah-wah design.
- Dual Fasel inductors for two distinct wah voicings
- Built-in MXR MC-401 Boost/LineDriver
- Side-mounted kickswitches for inductor and boost selection
- True hardwire bypass
- Long-life CTS potentiometer
- Internal trim pots for Q and gain adjustment
- Status LEDs on each side






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