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The Flanger Gets a Face-Lift

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' best flanging effects in a compact pedal
  • New Ultra and Gate/Pan modes for ultra-fat flanging and futuristic slicer-type sounds, respectively
  • Momentary mode turns flanging on instantly
  • Tap tempo adjustable via pedal
  • Independent Guitar and Bass inputs and stereo outputs
  • BOSS five-year warranty


Technical Specifications


  • 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.)
  • Controls
    • Pedal Switch, MANUAL Knob, RES (resonance) Knob, DEPTH Knob, RATE Knob, MODE Knob
  • Indicator
    • CHECK Indicator (Serves also as tempo and battery check indicator)
  • Connectors
    • 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)
  • Accessory
    • Dry battery (9 V type) S-006P/9 V (6F22/9 V)
    • Owner's Manual
  • Option
    • AC Adaptor: PSA-Series
  • Size and Weight ( incl. battery )
    • Width
      • 73 mm
      • 2-7/8 inches
    • Depth
      • 129 mm
      • 5-1/8 inches
    • Height
      • 59 mm
      • 2-3/8 inches
    • Weight
      • 420 g
      • 0 lbs. 15 oz.

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