

The MC404 CAE Wah by Custom Audio Electronics features dual Fasel inductors with two distinct voices, allowing users to switch between high-end emphasis or low to mid resonance. It also includes a built-in MXR MC401 Boost/LineDriver for added flexibility. The pedal boasts true hardwire bypass, a long-life CTS potentiometer, and internal pots for "Q" and gain adjustments. It can be powered by a 9-volt battery, a Dunlop ECB003 9-volt adapter, or the DC Brick™, Iso-Brick™, and Mini Iso-Brick™ power supplies (not included).
Technical Specifications:
- Impedance:
- Input: 1 MΩ
- Output: <10 kΩ
- Center Frequency (Yellow Inductor):
- Heel Down: 400 Hz
- Toe Down: 1.9 kHz to 2.2 kHz
- Center Frequency (Red Inductor):
- Heel Down: 255 Hz to 355 Hz
- Toe Down: 1.3 kHz to 1.5 kHz
- Maximum Level:
- Input: -6 dBV
- Output: +8 dBV
- Maximum Gain:
- Heel Down: +16 dB
- Toe Down: +16 dB
- Noise Floor:
- Heel Down: -85.5 dBV
- Toe Down: -82.0 dBV
- Bypass: True Bypass
- Current Draw: <6.3 mA
Additional Features:
- BOOST VOLUME knob for controlling the amount of gain added by the BOOST
switch
- UPPER and LOWER TRIMPOTS for adjusting the Q of each Fasel inductor
- INDUCTOR switch for toggling between red/yellow inductors
- BOOST switch for engaging boost level set by BOOST VOLUME knob
The pedal also includes bright status LEDs on each side to indicate operation status.
Watch the latest video demos and reviews for the MC404 CAE Wah from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.
Below are live Reverb listings for the Custom Audio Electronics MC404 CAE Wah from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.
Brand New
$189.99
Excellent
$139
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