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Average Price: $164
Standard/Professional
$70
$201+
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Price History
Based on price data from 5 merchants for "MXR M288 Bass Octave Deluxe". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Unleash your bass's full potential with the MXR M288 Bass Octave Deluxe. This dual-voice octave pedal is a game-changer, utilizing MXR's 18-volt Constant Headroom Technology (CHT) to deliver unmatched headroom and superior tracking. Experience the freedom to mix your direct bass signal with the octave effect through the Dry knob, or add a punch to your tone with the Mid+ switch, allowing up to +14dB of internally adjustable low-mid punch (400Hz) or midrange pop (850Hz).
The MXR M288 Bass Octave Deluxe isn't just about technical prowess, it's also a master in tonal versatility. With its two separate octave controls, Growl and Girth, you can tailor your sound from throaty midrange octave-below tones to deep and smooth octave below notes. This tone shaper's dream also offers true bypass for pure analog tones.
Enclosed in a durable, lightweight aluminum casting, the Bass Octave Deluxe is as road-ready as they come, boasting the same high-quality jacks and switches that have made MXR pedals a staple on pedalboards worldwide.
Key Features:
- Dual-voice octave pedal
- MXR's 18-volt Constant Headroom Technology (CHT)
- Dry knob for blending direct bass signal with octave effect
- Mid+ switch for adding up to +14dB of low-mid punch or midrange pop
- Growl and Girth controls for customized octave voices
- True bypass for unaltered signal when the pedal is off
- Durable, lightweight aluminum casting
- Powered by a 9V battery or external power source (not included)
Product specs
| Pedal Type | Bass Octave |
| Analog/Digital | Analog |
| Inputs | 1 x 1/4" |
| Outputs | 1 x 1/4" |
| Bypass Switching | True Hardwire |
| Power Source | 9V DC power supply (sold separately) |
| Power Usage | 14mA |
| Batteries | 1 x 9V |
| Height | 2.12" (including knobs) |
| Width | 2.62" (including jacks) |
| Depth | 4.37" |
| Weight | 0.51 lbs. |
FAQs
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What kind of power supply does the MXR M288 Bass Octave Deluxe require?
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The MXR M288 Bass Octave Deluxe requires a 9V DC power supply, which is sold separately. It can also operate with a 9V battery.
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Is the MXR M288 Bass Octave Deluxe suitable for live performances?
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Yes, the MXR M288 Bass Octave Deluxe features true hardwire bypass switching, ensuring no signal loss, making it suitable for live performances.
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How does the MXR M288 Bass Octave Deluxe affect the bass tone?
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The MXR M288 Bass Octave Deluxe provides a rich, analog octave effect that can enhance your bass tone with deep, warm sub-octaves, perfect for adding depth to your sound.
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Does the MXR M288 Bass Octave Deluxe work well with active basses?
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Yes, the MXR M288 Bass Octave Deluxe is designed to work well with both passive and active basses, offering versatile tonal options.
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What are the main controls on the MXR M288 Bass Octave Deluxe?
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The MXR M288 Bass Octave Deluxe features controls for Dry, Growl, and Girth, allowing you to blend your dry signal with two separate octave voices for a customizable sound.
Videos
Thomann's Guitars & Basses
Top 5 | Bass Octave Pedals | Demo | Thomann
Top 5 | Bass Octave Pedals | Demo | Thomann
Thomann's Guitars & Basses
MXR Bass Octave Deluxe & Bass Envelope Filter
jimdunlopusa
MXR - Bass Octave Deluxe - Demo (Bass)
Dan Leggatt
MXR M-288 Bass Octave Deluxe Pedal
N Stuff Music
MXR Bass Octave Deluxe | Reverb Demo Video
Reverb
MXR Bass Octave Deluxe plays well with other pedals
Burning Hand Sounds
Bass Octave Deluxe - MXR | Review | Guitarspot.Gr
GuitarSpotGr
MXR Bass Octave Deluxe (with my guitar)
henriquelhrf
MXR M288 Bass Octave Deluxe in action
Michael “Eleven” Schmitt
Reviews
PROS
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Offers a wide variety of tones with only 3 controls and 1 switch
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Reasonably priced with high-quality components
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Dual voices ("Growl" and "Girth") provide versatile octave effects
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"Dry" mix control allows for precise effect blending
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"Mid+" switch boosts selected mid frequencies for tone shaping
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Tracks well on lower notes, even with active pickups
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Solid build quality in a compact, lightweight aluminum case
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Works well with both passive and active basses
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Can achieve synth-like tones, enhancing musical creativity
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Provides a substantial volume boost with the "Mid+" feature
CONS
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Requires removal of the entire bottom to change the 9V battery
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Some users report tracking issues on very low or high notes
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Screws holding the bottom plate can be excessively tight
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Some units may exhibit glitching or muddy signal
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The "Growl" octave can have a quieter signal level compared to the input
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Limited to octaves down, missing high octave functionality
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Doesn’t track bass chords, limiting some playing styles
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR M288 Bass Octave Deluxe.
Features and functionality
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The MXR M288 Bass Octave Deluxe offers distinct octave sounds that are very usable for different applications and tracks exceptionally well.
Source -
The Aguilar Octamizer allows for mixing dry signals with octave down, offering control over how subby, clean, or synthy the sound is through the filter knob.
Source -
The MXR M288 uses "Girth" and "Growl" knobs, each providing a distinct EQ for the single octave below, unlike OC-2 which offers two octave ranges.
Source -
The OC-5 offers separate routing for wet/dry signals, which can be especially helpful for specific mixing needs.
Source -
The MXR M288 is preferred by analog enthusiasts, particularly those who don't find much use for two octaves down.
Source
Comparisons
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The MXR M288 is praised for achieving the OC-2's octave-down synthy sound effectively, ideal for those seeking an electronic tone.
Source -
The Aguilar Octamizer is considered more versatile compared to the MXR, allowing for a broader range of tonal adjustments.
Source -
The MXR M288 is noted for having more flexibility and better tracking below the A note compared to the Boss OC-2, which struggles with lower notes.
Source -
The MXR M288 is analog, offering a different sound quality compared to the digital Pitchfork, with owners noting the analog’s superior sound but less effective tracking.
Source -
The OC-5 tracks better to the open B on a five-string bass, while the MXR M288 tends to track only down to the G note on the E string.
Source -
For those interested in a smaller footprint, the MXR Vintage Bass Octave may be preferable as it closely replicates the OC-2 sound.
Source
Use cases and applications
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The Aguilar Octamizer is recommended for users looking for a simple yet high-quality octave pedal, ideal for those who appreciate versatility in sound shaping.
Source -
A user noted the MXR M288's "2 oscillator style bass sound" makes it ideal for achieving a fuller, fatter sound, appealing for non-metal genres needing depth.
Source -
The OC-5's polyphonic mode is beneficial for bassists who play a lot of double stops or chords.
Source
4.5 out of 5
Based on 11 Reviews and 67 Ratings
3670
Good versatile octave pedal for those that don't do the octave thing full time.
This is one nifty pedal. It's got 2 different octave circuits. To my ears the growl mode sounds more like a synthy oc-2 type thing while the girth mode is like a more natural bass sound. Tracks pretty good. High quality as you'd expect from MXR.
Preferred Settings + Usage:
I use their "Playhouse"/Pino Palladino setting from the online manual. Sounds great.
164
Best octaver in the market
Nothing to say about this awesome pedal, it just has an awesome sound.
Preferred Settings + Usage:
Mid+ off Dry at 3 Growl at 9 Grith at 11
332
Fun Octave Pedal
This is a fun, yet not very versatile octave pedal. I didn't realize how much I would really crave a high octave on a bass octave pedal. This pedal only offers really a low octave. That being said, the low octave sound is great. Very beefy, clear, and manipulable.
best non-synthy bass octave
my settings are dry = dimed (if muddy sett to 3 o'clock) and the two other knobs at 12 o'clock and under, mid button never on. i find that this setting works in a rock/metal/punk band. great tracing. i could play every fret with no problem (your results may vary). the only octave on the market that is creamy sounding. i'll swap wahs, fuzzes, etc. but i have no need to replace the mxr bass octave deluxe. sounds great with the mxr bass fuzz deluxe.
272
Not bad
Nice sub bass sound. No OC-2. Nice alternative if you’re going for something a little different.
41029
yeah, but its a blue box with an extra knob which is down only...
632
great octaver
with my fretless it sound so nice..... multiple combination ..... i love it
Great tracking, best tracking on the market
MXR"s Bass Innovations line of pedals are great! Built by bass players for bass players!
Artist usage
Add artist
Jim Root is shown using the MXR M288 Bass Octave Deluxe pedal in a user-uploaded photo on Imgur.
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At 3:46 in this DunlopTV video, Jerry Cantrell's guitar tech, Punk Rock Dave, discusses Jerry's use of the MXR Bass Octave Deluxe and says, "I love it; it has an amazing sound."
"In the effects loop this year I have the MXR Bass Octave pedal," says Billy Gibbons's guitar tech about the MXR M288 Bass Octave Deluxe Effects Pedal.
This video from DunlopTV features the guitar tech of TOOL's longest acting bassist, Justin Chancellor. As he runs through some of the pedals within Chancellor's pedal board, we see that the over-all board is in 3 sections. On the left section is has an MXR Bass Octave Deluxe Pedal.
According to Jim Dunlop's website, Les Claypool is confirmed to use the MXR M288 Bass Octave Deluxe.
At 0:58 the bass octave deluxe is seen next to the phase 90
At 3:00 of this Rig Rundown for Stephen Carpenter of Deftones, he shows off some of his gear, including an MXR M288 Bass Octave Deluxe Effects Pedal.
At 6.05 Marcus Miller shows how the Bass Octave sounds. According to Miller, he mostly uses it with the fretless bass because the pedal "tracks so well."
At 1:42, a MXR M288 Bass Octave Deluxe Effects Pedal is shown.
The pedal can be seen in Yvette's pedalboard, all the gear is listed in this article. This pedal was listed in the gear list of Young's 2018 She Shreds interview.
From the interview with Premier Guitar:
What effects did you use for Blood In, Blood Out? Holt: I use a ton of different pedals. I love stompboxes—they’re like crack to me! I have pedals from Maxon, Dunlop, HomeBrew Electronics, Pigtronix. I use a lot of the Maxon Tube Screamer-type pedals. They made the original ones, so they have ones that are exactly like the original, sought-after ones, and they also have updated versions.
I also love the Boss Octaver. I’ve never been without one my whole life. Dunlop makes a bass octave pedal, which sounds probably even a little better and has a smaller footprint, which I also like. And I use a Voodoo Lab Ground Control. With Slayer, I’ve been using the Dunlop Jerry Cantrell wah. Kerry [King] uses the Zakk Wylde wah, so I wanted something to differentiate our wah sounds.
"I love MXR’s Carbon Copy Delay, plus their Phase 90, Bass Octave Deluxe, Bass Envelope, and one of my favorite delays that Way Huge makes called the Aqua Puss," says Michael League, in this interview with No Treble.
Album Usage
The MXR M288 Bass Octave Deluxe has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use MXR M288 Bass Octave Deluxe, it is most commonly used with the following gear.
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Community setups
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