The Boss FW-3 Foot Wah is a vintage, all-metal guitar effects pedal released around 1991.
Key Features and Specifications
Unusual Design: Uses an internal slider potentiometer mechanism instead of a standard rotary pot.
Peak Control Knob: Adjusts the filter peak level and overall depth/style of the sweep (from soft to deep).
Activation: Engaged by fully depressing the treadle forward (can also be toggled remotely via an optional FS-5U foot switch connected to the Remote On/Off jack).
Power: Runs on a single 9V battery (006P) or an optional Boss PSA-series AC adapter.
Specs: 1 MΩ input impedance, 1 kΩ output impedance, 5 mA current draw, and a weight of approximately 1.1 kg
