The Boss BF-3 flanger is an easy call when it comes to both light and heavily-warped modulation effects.
And if you narrow it down to just flanger pedals, this one (as was its predecessor - the BF-2) is king of hill. Particularly in the mainstream world of guitar pedal consumerism, Boss's flanger is a popular choice.
Just take a look at the massive amount (and reduced prices) of used options.
I added one to my pedalboard a few months ago to replace a Boss CE-5 Chorus Ensemble.
The CE-5 was good, but it was largely a one-trick pony. The flanger can handle the same kind of light modulation I liked the CE-5 for, plus a litany of other sounds. A big part of this versatility is due to the multiple flanger modes the BF-3 employs.
Read the review: Boss BF-3 flanger
Boss BF-3 Flanger Modes
The four different flanger modes are made up of the following:
- Ultra
- Standard
- Gate/Pan
- Momentary
The "Momentary" mode is a type of step on/step off function that allows you to hold the pedal down to use a flanger effect briefly. That way you don't have to click more than once.
I took the time to catalog some of these sounds, record them and put them in this article for safe keeping and my own reference.
We'll cover six settings that I came up with, and go through eight of the Boss BF-3 Flanger settings that Roland provides in the user manual. That manual also gives you a "memo" sheet of blank settings where you can write down different dials for your BF-3 flanger pedal.
You can download just that page via the link and photo below.

Download a blank settings sheet to follow along. (Download PDF)
Aside from the BF-3 flanger itself, I used a Line 6 DL4 delay (for some additional tinkering that I thought sounded pretty decent on number six). I also used a British Tweed amp model in GarageBand 10.
I'd recommend setting the pedal up on a desk where you can get to the dials easily.
Here's a quick list of the gear I had hooked up:
Gear I Used for this Article
Gear | Title | Rated | Browse |
---|---|---|---|
![]() | Boss BF-3 Flanger | 93.8 | |
![]() | Line 6 DL4 Delay | 92.3 | |
![]() | Mac Mini (GarageBand) | n/a |
Any kind of traditional setup where you have the BF-3 Flanger running into an amplifier or some kind of audio interface will work fine.
The diagram from the BF-3 manual outlines both a mono and stereo setup.

Diagram for hooking up the Boss BF-3 with a stereo connection. Image via American Musical.
For your amp settings, just dial in a basic clean tone with a bit more low end.
If you need some ideas, we've got plenty of amp settings for you to sample and try out.
Once you've settled on your three-band EQ, add some reverb for a more shimmery final product.
Let's start with what Boss gives us from the product manual.
Boss BF-3 Flanger Settings from the Manual (starting at number seven in our list)

Boss BF-3 Flanger settings from manual.

Boss BF-3 Flanger settings from manual (second list).
1. Freak on a Leash by Korn (Verse Modulation and Vibrato)

I stumbled across this setting in the GATE/PAN mode, which is more like a heavy vibrato or tremolo, but seemed perfect for those eerie Korn rhythms that Brian Welch and James Shaffer are so good at nailing down.
Cranking the RES and MANUAL control is what did the trick, giving the modulation a distinct "other-worldly" quality.
It's great for melodic accents in a minor key.
Set RATE and DEPTH to taste. I found that they worked fine at the 12 o'clock position.
- Mode: Gate/Pan
- Manual number: 10
- Res: 10
- Rate: 5
- Depth 5
2. Black Hole Sun by Soundgarden (Kim Thayil's Verse Riff)

I don't think Kim Thayil uses a flanger pedal for this effect, but the BF-3 is capable of replicating it in ULTRA mode, which is once again a distinct tremolo-like modulation.
It differs in that you'll hear a little more shimmer and shine, like a chorus, whereas the GATE/PAN mode produces a more timed, almost echo-like sound.
This one gets close to the "Black Hole Sun" vibe and really shows off the versatility of this pedal.
The key is to make sure DEPTH isn't too high or too low.
I found that around 60-70 percent was the most ideal spot for it.
Too low and you lose the "shine." Too high and the spin is overly thick and too chaotic to sound like Kim Thayil's riff.
- Mode: Ultra
- Manual number: 6
- Res: 5
- Rate: 9
- Depth: 6
3. Thin Modulation Layer (classic flange)

To get the classic "airplane over your head" sound, I cut depth and rate back to roughly 40 percent while leaving the pedal in STANDARD mode. You might notice on the recording I uploaded that this creates a swooshing effect in the background, which is slightly noticeable even when I wasn't playing anything.
This background ambience can usually be remedied by a noise gate placed after the BF-3.
Typically I would use the Boss NS-2 for something like that, but the noise was fairly minimal and not enough to distract from the melody.
You can play with the modulation controls which are just DEPTH and RATE controls. Anything between three and five, for either of those knobs, is enough to give you a layer of modulation but still sounds subtle and nuanced.
- Mode: Standard
- Manual number: 5
- Res: 5
- Rate: 4
- Depth: 4.5
4. Vocal Wah-Like Flange

Surprisingly, you can get the Boss BF-3 to sound like a talk box in its standard mode.
Most of the workload here is handled by the RES control, which is an excellent addition to this iteration of Boss's flanger line. It just does so much in the way of expanding the BF-3's range.
In this case, we move both the RES and RATE controls to 70 percent. The added rate gives use the quick wah-like swells.
Turning depth up higher sounded a little too messy to me, but it did accentuate the vocal aspect of this sound, and is certainly an option for those of you who want to up the intensity.
Adding distortion or a classic Hendrix-like fuzz makes this one even more fun.
- Mode: Standard
- Manual number: 7
- Res: 4.5
- Rate: 7
- Depth: 4
5. Thin Layer of "Almost Nothing" Modulation

I've often relied on modulation pedals for nothing more than layering a clean tone. And by that, I mean that in some cases I want my guitar to sound clean, but with just a little something extra.
The above setting is what I typically use for that task, as the RATE and RES controls are backed down around 30 percent, giving off just a faint suggestion of modulation.
It sounds more like a thin chorus effect than a full flange.
It's fantastically subtle and perfect for dressing up a clean tone that needs a boost.
- Mode: Standard
- Manual number: 3
- Res: 5
- Rate: 3
- Depth: 5
6. Modern Laser-Like Picking Swell (Wes Borland Style)

The first half of this recording is the above-pictured BF-3 settings combined with a tape delay on the Line 6 DL4 (pictured below). I've also included the riff with only the BF-3 if you listen past the first recording.
The riff is pulled from "Livin' it Up" by Limp Bizkit, since the effect reminded me a lot of Wes Borland's melodic guitar playing that relied heavily on a phaser-style modulation reminiscent of lasers being shot off in a cartoon.
It's great for some of the more intense and odd-sounding minor chords or intervals, which tend to play really well with delay and echo effects.
It's a good one for the non-traditionalists among us.

Line 6 DL4 pedal I used for the delay with the Boss BF-3.
- Mode: Standard
- Manual number: 7
- Res: 10
- Rate: 3
- Depth: 5
Using the Boss BF-3 Flanger with a Bass Guitar
The BF-3 is designed to process the lower frequencies of a bass guitar, just as effectively as it does a typical six-string electric. As you might have noticed in the earlier diagram, there's even a separate input for both instruments.
Having said that, not all of these settings are going to be equally effective in conjunction with the role of a bass guitar.
For example, bass players probably won't find a lot of use for the fluttering effect that I dialed in for the "Black Hole Sun" riff.
However, the modern laser effects we created in number six could be applicable for bass players in certain types of funk genres or slap bass styles.
It all just depends on what type of music you play.
Generally speaking, modulation and the bass guitar go together sparingly. And when they do, it's usually meant to provide a subtle layer of flavor and not to significantly alter the bass's clean tone.
Here's a quick list of recommendations for those using the BF-3 with a bass guitar.
- Stick with the STANDARD mode
- Keep RATE and DEPTH knobs around 12 o'clock most of the time
- Use the RES control to adjust intensity
I'd also recommend dropping the BF-3 at the end of your pedal chain (note that it has stereo outputs so it can split your signal) if you have other pedals.
Boss BF-3 Flanger vs MXR Flanger
A common comparison (mostly because of price and popularity) is the Boss BF-3 and the MXR Flanger or Micro Flanger.
The main reason I don't like the MXR Flanger as much, isn't really about sound quality as much as it is about control. The MXR flangers, particularly the Micro version, just don't give you as much flexibility.
Here's a quick look at the regular version.

An old MXR flanger pedal, first released in 1977.
There are no mode controls like the BF-3, and you also loose the stereo i/o features.
The Micro version could be more ideal if you want a simple modulation interface (typically just rate and depth controls) since it gives you only a RATE and REGEN knob.

The MXR Micro flanger pedal and its box.
Thus the primary difference between the Boss and MXR flanger styles is seen in the amount of tinkering you'll be able to do.
For those who want a simpler, more straightforward control scheme that you don't have to fool with, MXR might be the better option.
Personally, I prefer the flexibility and control afforded by the Boss BF-3.
Otherwise, it would be tough to come up with this many different settings and sounds.
Your Questions
Have questions about the Boss BF-3 or the settings I posted here?
Drop it in the comments section below and I'll respond there. That way if other community members and readers have similar questions, they can benefit as well.
Your own settings, screenshots and audio samples are also welcome additions.
Boss BF-3 Flanger Reviews and Other Resources
- Ultimate-Guitar Review and community voting results for the Boss BF-3 flanger.
- A bassist's review of the BF-3 covering all the specs from a bass perspective
Related Articles
Written by Bobby on Pedals and Reviews
Written by Bobby on Pedals and Settings
I have a Boss Flanger pedal and need help on EVH settings for songs like Unchained and Ain’t Talking about Love. The MXR Flanger has different settings than Boss flanger. So to duplicate the EVH flanger tones what settings would you recommend as a starting point?
What settings do you have for the EVH? Can you give me some numbers?
I believe EVH settings for Manual, Width, Speed all at 10:00 and the Regen at 2:00 on the MXR Flanger he used in past albums. Not sure what to use as similar on Boss Flanger pedal.
I’d replace manual/width/speed with manual/depth/rate, then assume RES = Regen.
So something like this:
– Manual: 10:00
– Depth: 10:00
– Rate: 10:00
– Res: 2:00
As you said, it would just be a starting point, but those controls should correlate.
How would that map to a Boss MD-500? The MD-500 has settings from 0 to 100 which makes translating manual settings on pedals a challenge!
I would start with this:
– Manual: 30/100
– Depth: 30/100
– Rate: 30/100
– Res: 10/100
Thanks what would I set for flanger rate on the Boss MD-500?
it shows values in Mhz and BPM for note type as default such as quarter note, dotted eight note, whole note, etc. So confusing!
I set the other values per the recommendations. I figure that if I can get these setup for EVH and Gilmour flanger sounds I can keep the pedal as it has tons of cool mod effects in one small box plus amazing patch storage and MIDI.
What’s RES?
I don’t see that on the pedal?
Is it standard mode?
Just purchased the pedal and trying to figure it out.
Does it show those values for the flanger? To be honest, I’m not sure why it would give you those options because the flanger is not a timed effect.
Actually it does and that is one weird thing to me about how the Boss MD-500 works. From page 12 of the manual:
https://static.roland.com/assets/media/pdf/MD-500_eng01_W.pdf
It says the following about flanger settings:
RATE 0.01–20.00 Hz Adjusts the speed of modulation
Why in good heaven’s name would Boss get cute and use Hz for speed of the flanger and their other effects? Makes it tricky for mapping parameters to what manual pedals use. I also will contact Boss tech support to see what they have to say. Other than that a great pedal to let me run 2 mod fx at once and save space on the board. The chorus/dimension quality of the mod fx on the MD-500 are worth the price alone. I still may get another pedal for flanger.
Ok I found some clarify from another flanger guide with regard to speed settings:
SPEED Controls the Rate of sweep in a range
from 1 sweep every 10 seconds to 10
sweeps each second (0,1-10 Hz).
So for EVH and Gilmour tones what would you recommend ?
It’s the small knob in the middle of the bigger one all the way to the left. Stands for “resolution.”
Sorry, I’m a bit mixed up from before. Could you recap for me what settings you’re working with on the MD-500?
To chime in the discussion,
I think that EVH used to set everything to 10-12’oclock for the MXR flanger I believe based on the below interview
https://www.guitarworld.com/gear/eddie-van-halen-how-he-created-his-signature-sound-using-mxrs-phase-90-and-flanger-pedals
It is tricky mapping MXR flanger settings to the Boss MD-500 since it has tons of settings.
Thanks for chiming in, Ben. I agree it’s tricky, especially with something like the MD-500. Probably easier with just the BF-3.
Agree- that said I can get a passable EVH, Gilmour and Heart/Barracuda flanger with setting the rate to a low value like 0.150Mhz and values fairly low like 50/50/40 on the MD-500. I considered returning my Boss MD-500 pedal since it has a lot of menu diving but the amount of modulation effects in that small box and ability to save presets and run two mod FX at once is amazing. For fun I may shop for a used flanger pedal to use with it.
That’s why I’ve always preferred single stompboxes, for the simplicity. The MD-500 is a great tool but it gives me panic attacks haha.
How would I get color settings like that used for Gilmour tones that he used the Electric Mistress flanger with the Boss flanger settings as there is no color setting?
I think on the BF-3 that RES/MANUAL control would be the closest thing you’d get to a “color” dial. I’d start there.
Great blog on Boss flanger settings! Ok so I have a Boss MD-500 which has the Boss Flanger. I am trying to setup my Boss flanger to replicate the Electric Mistress flanger settings that Gilmour used on Pink Floyd songs. How would I do this? There is no color setting on the MD-500 Boss flanger setting.
Thanks,
Ben
Like I mentioned in response to Scott, I think that RES/MANUAL control should behave similarly to a color knob.
So I’ve always been a fan of the band cold. And I love the ambience in most of their songs. Preferably off of 13 Ways to Bleed On Stage and year of the spider. I got a boss bf-3 and I’m trying to figure out how to get some of the sounds like they use in “no one” and “change the world” I could be mistaken for a phaser or possibly chorus. But if anyone has similar settings or ideas to find it. Please let me know
Awesome page my friend! I picked up a cheap bf3. Finally had the chance to mess around with it tonight and the res/manual knob is all bent so res will not move. I can’t seem to pull the knob off. Worried there is more going on under that knob. Guessing you or someone else has removed these before. Any tricks.
Hmm, that’s really odd. I would expect you’d be fine to pull the knob off, though I’ve never actually done it before. Too bad, because the res knob is really handy on this box. Good luck.
I just picked up a used BF3 for a little over $30. Never messed with a this type of modulation and really only had a couple minutes to play around with it last night. Seem like there is a ton of room to experiment with all the settings. Excited about finding it so cheap too. Thanks for the nice breakdown in your post. This gives me some good jumping off points.
Thanks, Mark. Glad you found this helpful. There’s a lot you can do with the BF3, for sure.