The Electro-Harmonix Deluxe Electric Mistress Effects Pedal gives you an array of critically notched and tuned filters that gracefully sweep the sound spectrum, creating shimmering, ethereal passages that are truly out of this world. Exclusive "Filter Matrix" mode disengages the automatic sweep, allowing manual positioning of the filter bank to achieve chime-like metallic tones and other unique effects with your Electric Mistress guitar pedal.