The Maxon GE601 Graphic Equalizer is a perfect tool for accurately controlling the sound of an instrument. Covering six carefully selected frequency ranges from 100 Hz to 3.2 kHz and offering up to 12 dB cut or boost, the GE601 can be used as a sound filter, to eliminate feedback, or as a level booster. Thanks to its wide frequency range, the GE 601 is suitable for use with a wide variety of instruments such as guitars, basses and keyboards.