Yngwies ground breaking playing style masterfully fuses neoclassical prowess with the raw energy of rock n roll. This pedal is designed to ensure that both of these core elements shine through when its time to kick into high gear. Working closely with Yngwie, the MXR design team created a circuit that delivers clarity, expressive dynamics, and rich harmonics - all perfectly tailored for his light-speed arpeggios, expressive vibrato, and big, bold riffs. The control setup is simple, with just Level and Gain knobs, but every adjustment you make will have a profound impact. Want to sound like Yngwie? Crank both knobs to the max. True hardwire bypass. Powered by 9 volt battery or AC adaptor (ECB003).