Building on the 20-year legacy of the famous BOSS BF-2, the new BF-3 flanger pedal gives guitarists and bassists an updated version of the classic BOSS flanger with the thickest stereo flanging sounds ever. Two new modes (Ultra and Gate/Pan) create stereo flanging with incredible depth--even Slicer-type effects and sounds that seem to "swirl" around the listener. An instant classic.

BOSS BF-3 Flanger Pedal

SKU: bf3
  • Nominal Input Level -20 dBu

    Input Impedance 1 M ohms

    Nominal Output Level -20 dBu

    Output Impedance 1 k ohms

    Recommended Load Impedance 10 k ohms or greater

    Delay Time 0.3 mS to 14.4 ms (GUITAR IN), 0.3 ms to 6.3 ms (BASS IN)

    LFO Speed 100 mS to 18 S

    Residual Noise -95 dBu (IHF-A Typ.)


    Pedal Switch, MANUAL Knob, RES (resonance) Knob, DEPTH Knob, RATE Knob, MODE Knob


    CHECK Indicator (Serves also as tempo and battery check indicator)


    GUITAR IN Jack, BASS IN Jack, OUTPUT A (MONO) Jack, OUTPUT B Jack, AC adaptor Jack (DC 9 V)

    Power Supply

    DC 9 V: Dry battery (9 V type), AC Adaptor (PSA-series: optional)

    Current Draw

    40 mA (DC 9 V)


    Dry battery (9 V type) S-006P/9 V (6F22/9 V)
    Owner's Manual


    AC Adaptor: PSA-Series