MXR M288 Bass Octave Deluxe
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Essential Information About the MXR M288 Bass Octave Deluxe Pedal
Essential Information About the MXR M288 Bass Octave Deluxe Pedal
- Analog Octaver for Bass: thick, organic lows that are highly responsive to playing, perfect for beefing up a line or creating a true "synth bass."
- Two Distinct Octave Voices (Growl and Girth) mixable to switch from a rough and present octave to a deep and smooth octave.
- Constant Headroom Technology: internal 18V operation while still powered by 9V, for more dynamics and better attack retention.
- True bypass: easy integration on a pedalboard, preserving a direct sound when the pedal is bypassed.
Manufacturer Information
MXR
https://www.jimdunlop.com
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A Modern Analog Octaver Designed for Bass
On a bass, a good octaver doesn't just add a note one octave lower: it must remain clear, follow the playing precisely, and maintain the foundation of the fundamentals. The MXR M288 Bass Octave Deluxe follows the tradition of analog octavers with a "vintage" character, while offering a more flexible approach thanks to its two complementary octave circuits. The result: you get the organic grain and the "under the fingers" feel expected from an analog octaver, with more options to tailor the sound to the mix, amp, and style.
Who It's For, Which Styles, and In What Contexts?
The Bass Octave Deluxe is aimed at bassists who want to thicken their sound without losing the impact of right-hand playing. It suits both beginners (simple and effective controls) and experienced bassists looking for a characterful octaver that easily integrates into an effects chain.
It excels in funk (nervous and punchy octave), rock and stoner (massive low end and natural sustain), pop and gospel (subtle low-end reinforcement), and even electro/hip-hop when seeking a warm "sub" foundation. Live, it immediately adds weight and breadth; in the studio, it allows doubling a line with extra foundation without digital artifacts.
Technical specifications
| Effects | Bass, Bass Octaver | EQ | Yes |
| Technology | Analog | Settings | dry, girth, growl |
| Format | Pedal | Use | Bass |
| Inputs | Jack | Color | Blue |
| Outputs | Jack | Power supply included | No |
| True bypass | Yes | Power supply | 9V battery, DC 9 V |
| Switch | Mid + | ||
Customer reviews
Based on 2 reviews
- 5 stars, 1 review
- 4 stars, 1 review
- 3 stars, 0 reviews
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Great October... I love it, and coupled with a filter envelope, it's giant...
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Why are the delivery costs 50âŹ
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Questions frequently asked
Does the MXR M288 Bass Octave Deluxe operate with a 9 V power supply?
Power is supplied by a 9 V battery or a 9 V DC adapter, not included, with a consumption of approximately 6 mA.
How to adjust the mix between the bass signal and the octave?
The Dry control doses the original signal to preserve the bass attack. The Growl and Girth controls then allow adding the two octave circuits separately or together.
What is the function of the Mid+ switch on this bass octaver?
The Mid+ switch adds up to +15 dB in the midrange. Two frequencies are available: 400 Hz to enhance the body of the note, or 800 Hz to emphasize its presence. This feature helps maintain clarity in a dense mix.
What kind of sound does the MXR M288 analog octaver produce?
The analog design produces a warm and textured low octave, whose response reacts to playing dynamics. Playing near the neck favors a round tone, while picking near the bridge yields more precision.
Is the pedal compatible with basses that have a high output level?
Constant Headroom Technology ensures an internal 18 V operation from a 9 V DC power supply. This dynamic reserve better preserves attack when the instrumentâs output level is high.



