In order to design the best-sounding wah-wah pedal possible, Dunlop collaborated with Bob Bradshaw from Custom Audio Electronics - designer of custom pedal boards and effect systems for numerous famous rock guitarists. The brain child of this extraordinary pairing is the MC404 CAE, a wah pedal made of first-class components. As such, this pedal features two legendary Fasel inductors - each with their own sound and adjustable Q filters. The pedal also has a built-in boost function for extra flexibility. The MC404 CAE offers you the best performance and quality that you know to expect from Dunlop, the world leader in wah-wah technology. MC404 CAE: double Fasel inductors for extra sensitivity The heart of the Dunlop MC404 CAE consists of a high-quality CTS potentiometer and two Fasel inductors, both of which produce their own distinct wah sound. The red Fasel delivers the classic, bright Crybaby sound, while the yellow Fasel inductor offers a deep, warm sound. Use the side of your foot to switch on either inductor by activating the red kick-switch on the right side of the pedal Inside of the MC404 CAE are both inductors and a separate mini potentiometer which makes it possible to control the intensity of each inductor's wah effect for your own personalised wah sound. True Bypass design and built-in boost function The Dunlop MC404 CAE also features a built-in MXR MC401 Boost / Line Driver for spicing up the signal when you use multiple pedals. You can also boost your guitar sound up to +16 dB, to make your solos stand out even more. On the left side of the MC404 you'll find the volume control for the amount of boost, along with a red kick-switch for activating the boost function. Clear LED indicators let you know which functions are on or off. Another great feature is that the circuit of the Dunlop MC404 CAE is true bypass, which means that the pedal has absolutely no effect on your sound when it's off. Finally, the Dunlop MC404 CAE can be powered by a single 9V battery or via the optional Dunlop ECB003 AC adapter. A unique lid gives you direct access to the battery for swift changes.