Ibanez Auto Filter AF-201

The Ibanez AF-201 Auto Filter is an envelope-following filter pedal that sweeps a filter in response to picking dynamics. Its Mode switch selects between low-pass, band-pass, and high-pass filter types, changing the character of the sweep. The Sensitivity control sets how strongly the filter reacts to input level, so harder picking produces a more pronounced sweep, while softer playing yields a subtler effect. The Peak control adjusts the filter's resonance, emphasizing frequencies around the cutoff point for a more pronounced, vocal-like response. The pedal's envelope can be set to sweep upward or downward via the Direction switch, and the Range control determines the filter's starting frequency, affecting how high or low the sweep begins. The AF-201 features a true bypass footswitch, ensuring the dry signal remains uncolored when the effect is disengaged. It operates on a standard 9V DC power supply, with no battery compartment, and includes input and output jacks for mono operation.

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