For more than 30 years, the key component of Tom Morellos raw, hard-hitting sonic voice has been his amp setup. The MXR Power 50 Overdrive captures the sound and functionality of that setup for use with any rig. The circuitry uses MOSFET technology to recreate the preamp stages of Toms amplifier. Tom relies solely on his amplifier for his signature distortion tones, and when you step on the Power 50 Overdrive, youll understand why. Featuring Gain, Bass, Middle, Treble, Volume, and Presence knobs, just like his amp, you can replicate his exact settings. The built-in FX loop taps into the raw signal-clipping point prior to the Presence control and the custom tone-shaping at the output. The Power 50 Overdrive faithfully recreates one of the most iconic guitar tones of the modern rock n roll era. Tom used a half stack to hone that sound, and now, you can put it right on your pedalboard. True hardwire bypass. Powered by 9 volt battery or AC adaptor (ECB003 - Not supplied).