Boss BF-3 Flanger Pedal for Guitar and Bass
Now £128.00 Was £145.00

Boss BF-3 Flanger Pedal for Guitar and Bass

Now £128.00 Was £145.00


Order before 3pm Mon-Thu for Next Day Delivery

Boss BF-3 Flanger Pedal for Guitar and Bass
Now £128.00 Was £145.00
Retail Finance
Click and Collect

The BF-3 Flanger pedal gives you four different modes to play with and thick stereo flanging sounds.

Evolution of a Classic Flanger Pedal

The Boss BF-3 Flanger pedal builds on the 20 year legacy of the popular Boss BF-2 Flanger, giving both guitarists and bassists an updated of this classic flanger pedal with thick, stereo flanging sounds.

Boss BF-3 Flanger Pedal Key Features:

  • 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

Four Flanger Modes

What makes the Boss BF-3 Flanger pedal so great is its broad range of flange sounds, with four different modes giving you a lot to work with.

First there is the Momentary mode which allows you to apply the flanger effect to a precise point of your choice in a phrase.

Tap Tempo allows you to set the RATE to the tempo at which the pedal is pressed so you can have it perfectly in time to the music you’re playing.

One of two new modes for the Boss BF-3 Flanger pedal is the GATE/PAN mode which brings in a slicer effect to your sound when outputting in mono for a gate flanger effect. When using stereo output, the panning is spread three-dimensionally across the sound field for beautifully atmospheric and sweeping sound.

The second of the two new modes is the ULTRA setting which gives your sound a strong modulation effect which sounds particularly rich when used together with a distortion pedal.

Two Inputs and Stereo Output

Allowing you to fully appreciate the pedal are two outputs. If you’re looking to use the Boss BF-3 Flanger for mono sound you can simply use output A but to make the most of its incredible performance you can also use it in stereo.

You will also notice there are two inputs; one for electric guitar while the BASS IN has been optimised for bass guitar, so you get great sounding results whichever instrument you choose to use.

Create a peculiar metallic modulation sound by turning up the RES (resonance) knob and outputting in the BF-3's sound in stereo.

Simple Yet Comprehensive Controls

In addition to the Mode knob which allows you to select one of the four aforementioned modes, a few knobs on the face of the Boss BF-3 Flanger offer simple yet powerful control over your flanger sound.

The Manual knob allows you to select the centre frequency to which the effect will be applied, and on top of that is a Resonance knob which allows you to increase or decrease the resonance, or feedback, on your sound.

A Depth knob is present allowing you to adjust the sweep depth so you can take it from the slightest of swirls to full on waves of flange while a Rate knob allows you to set the speed at which the flange occurs.

Great Sounding Flanger Pedal for Guitar and Bass

Whether you’re a bassist or a guitarist, the Boss BF-3 Flanger pedal offers great, optimised flanger sound with a lot of adjustment options.

Buy the Boss BF-3 Flanger pedal today and get this unique and atmospheric sound on your pedalboard so you can sculpt some incredible new sounds.

Boss BF-3 Flanger Pedal Specs:

  • 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

Boss BF-3 Flanger Pedal Size and Weight (Including Battery):

  • Width: 73mm, 2-7/8 Inches
  • Depth: 129mm, 5-1/8 Inches
  • Height: 59mm, 2-3/8 Inches
  • Weight: 420g, 0 lbs. 15 oz.
More Information
Manufacturer Boss
SKU 329
Shipping Weight (kg) 0.500000


We have a wide range of Delivery Options available, depending on the value of your parcel and budget. Select from our 2-3 Day Saver Service or our Next Working Day options at the Checkout.
This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you, and the drivers name - just so you know when to turn the volume down!

  • Free Delivery Available on Selected Products
  • Weekend UK Mainland Delivery (Saturday-Sunday): £19.99
  • Small Items (Under 750g) Small items will be delivered by Royal Mail starting from 99p
  • Heavy Items (Over 30kg): Pallet Service Doorstep Delivery £65

For heavy items, courier details, out of stock products, out of area postcodes or international deliveries see our full Delivery info here.


Rather not wait in for the delivery? Don’t worry, we’ve got you…In Stock items can be ordered and paid for in-advance Online via our Click & Collect service. As long as if it's in stock at your chosen branch, you can collect the item within the hour.

Click here for more about our local Click & Collect Service.


If you and your item aren’t getting along, you have 14 days from when you receive the goods to contact our PMT experts either by phone or email to return your item.

*Please note: We cannot accept returns of microphones, any in-ear earphones, monitors, orchestral instruments with mouthpieces and any other items that touch your mouth, nose or inner ear if you have removed the hygienic packaging.

Click here for more information on Returns at PMT.

Online Orders

If you and your new item aren’t getting along, you have 14 days from when you receive the goods to contact our PMT Experts either by phone or email to return your item or organise an exchange for something more suitable.

Store Orders

If you've changed your mind about something you bought in-store, bring it back within 14 days of purchase and we'll be happy to exchange it for another product, a gift card or store credit.