Flange effect pedal that presents the lush flanging Electro-Harmonix is noted for but stays true to the classic Mistress pedal. Its design adjusts the harmonic sweep to present the varied tonal density that flanging brings to musical performance. Filter Matrix mode freezes the sweep of the flanger allowing manual control of the setting. Electro-Harmonix flanging takes advantage of the Feedback control to determine how much of the processed signal is fed back to the original. The pedal is a true bypass and can be powered by a 9V battery (included) or by an optional 9V power supply. Dimensions: 70 x 115 x 54 mm.