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Dunlop

MXR Poly Blue Octave Pedal

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$235.99

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Ships from Rapid City, SD. Free on orders over $100.

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MXR Poly Blue Octave Pedal


This is a brand new MXR Poly Blue Octave Pedalthat is located at our Rapid City, SD Showroom.


Buy risk free with our 14 day - full refund, less shipping, return policy. Check out our shop policies for more details.


The MXR Poly Blue Octave brings modern and classic pitch-shifting styles together with fuzz and modulation to create the ultimate octave pedal for tonecrafters and sonic seekers.

The MXR® Poly Blue Octave is powered by a 9-volt AC adapter such as the Dunlop ECB003/ECB003EU or an MXR BrickTM Series power supply. This pedal cannot be powered by a battery.

FEATURES

  • Input Impedance 1MΩ 
  • Output Impedance 100 Ω
  • Maximum Input Level +5 dBV 
  • Noise Floor -97 dBV 
  • Current Draw 265 mA 
  • Power Supply 9 volts DC

 

The Poly Blue Octave features four separate octave divisions—one octave down, two octaves down, one octave up, and two octaves up—and you get to control the level of each in the mix. Each is polyphonic by default, which means they sound just as amazing with chords as they do with single note passages. Your dry signal gets its own level control, as well, so you can dial in the perfect blend of pitch-shifted tones.

FROM CONTEMPORARY CLARITY TO RAW VINTAGE GRIT.

The Mono switch takes you back to the gritty, monophonic tones of analog style pitch shifters. In this mode, the sub-octave signals have the warm vibes and raw personality of a pedal such as the MXR Vintage Bass Octave, while the higher octave signals resemble the Octavio Fuzz with its fuzz intensity dialed all the way back.

CALL UP THE THUNDER AND LIGHTNING.

The Poly Blue Octave comes equipped with an unruly fuzz that’s inspired by the classic MXR Blue Box™ Fuzz. Applied to all five signals, the fuzz volume can be adjusted using the Dry knob after pressing and holding the Fuzz button. When used with the sub-octave signals, the fuzz sounds thick and subterranean. Over the higher pitched signals, the fuzz is searing and synth-like. Run them all at the same time for a choir of thunder and lightning.

PHASE YOURSELF.

For infusing your octave tones with an alluring sense of motion, from thick and syrupy to frenzied and frantic, the Poly Blue Octave features a dual-mode modulation effect. In polyphonic mode, the effect provides an uncanny simulation of the famous Leslie effect, and while In monophonic mode, it provides classic swirls and swooshes inspired by the Phase 90. Like the fuzz effect, the modulation applies to all five signals when engaged. The Mod knob adjusts the rate of the effect—when you want it off, just roll the Mod knob back fully counterclockwise.

STEP UP AND TAKE CONTROL.

Through the EXP jack, the Poly Blue Octave allows you to control various settings with an expression pedal such as the Volume (X)™8 Pedal or an off-board switch such as the MXR Tap Tempo Switch to sweep between two different knob and switch configurations or toggle the fuzz and mono modes on and off.

A FULL PALETTE OF TONES AND TEXTURES IN A SINGLE PEDAL.

The MXR Poly Blue Octave delivers high-performance pitch shifting, fuzz, and modulation in a ruggedly reliable housing with true bypass switching. Put this into your signal chain, and open up new sonic frontiers.

The MXR® Poly Blue Octave is powered by a 9-volt AC adapter such as the Dunlop ECB003/ECB003EU or an MXR BrickTM Series power supply. This pedal cannot be powered by a battery.

M306

Customer reviews

11,000+ Five-Star Reviews On Reverb

What players say after the guitar arrives

“The guitar was well packed and is set up to my liking! I would definitely do business with this company again!”

Gerald K. – Jun 4th, 2026Reverb
Gibson ES-330

“This is a beautiful guitar…appreciate the free setup and quick ship! Would purchase from this seller again…THANKS!”

Guitar D. – Jun 4th, 2026Reverb
Yamaha RSS02T

“Thank you too for a wonderful experience and an amazing guitar. I appreciate the quick shipment and great customer service.”

Eddie R. – Jun 4th, 2026Reverb
Epiphone 1957 SJ-200

“Very fast shipping, arrived in perfect condition, extremely well set up, no adjustments needed at all! Plays and looks great, exactly as advertised.”

Duncan K. – Jun 3rd, 2026Reverb
PRS SE CE 24

“Fast shipping, and great communication from the seller. Pedal arrived quickly and was packaged really well. Would not hesitate to buy again.”

Mark G. – Jun 3rd, 2026Reverb
JHS The Clover Preamp

Very well packed! Would be happy to do business again! Thanks!

Mark B. – Jun 2nd, 2026Reverb
Stevens Steel Lap Steel Bar

“Another masterpiece from Taylor. Great service and communication from Haggerty’s crew. Thanks!!!”

James S. – Jun 2nd, 2026Reverb
Taylor Custom Shop C14ce

“Beautiful guitar, easy txn! Thank you so much! Looking forward to playing this guitar far into the future.”

Josh H. – May 31st, 2026Reverb
Powers Electric A-Type FF42

“Fast shipping, great pedal. Buy with confidence these guys are great to work with!”

Carter M. – May 30th, 2026Reverb
Ibanez TS-9

“Great shop! Awesome price, super fast shipping, and great packaging of an awesome new pedal! Thanks!”

Craig C. – May 30th, 2026Reverb
JHS 3 Series

Frequently Asked Questions

Do you set up every guitar before it ships?

Yes. Every guitar that leaves our store has been professionally inspected, set up, and signed off by the technician who worked on it. You will find a signed checklist inside the box when your order arrives.

How accurate are your condition descriptions?

We treat condition grading as a contractual promise, not an approximation. When we list something as excellent, that reflects a specific, consistent standard we apply across every instrument. We encourage you to call us before purchasing if you want a detailed in-hand description of any specific guitar.

Can I call and speak to someone about a guitar before I buy?

Yes, and we encourage it. Our team are working musicians, not order-takers. Call us at 605-348-6737 and ask about any instrument in our inventory. We will physically pull it off the wall and describe it to you in detail.

What is your return policy?

We offer a 14-day return policy if you change your mind and the item is returned undamaged. You are responsible for return shipping costs.

Do you offer financing?

Yes. Financing options are available at checkout. Monthly payment options are designed to make high-ticket purchases more accessible without requiring full payment upfront.

How do you ship instruments?

Every instrument ships fully insured from our store in Rapid City, South Dakota. We offer free shipping on all website orders over $100. Guitars are packaged to survive transit, properly cased, braced, and protected.

Are you an authorized dealer?

Yes. We are an authorized dealer for Taylor, Martin, Gibson, Fender, and many other brands. We are currently the number one independent Taylor Guitars dealer in the world, an award we have received two years running for 2024 and 2025. We are also a Top 10 premium dealer for Martin, Gibson, and Fender.

Do you sell on Reverb and Amazon as well as your own site?

Yes. We are one of the top 15 resellers globally on Reverb, where we have accumulated over 11,000 five-star reviews. We are also one of the only independent premium dealers in the world authorized to sell Taylor and Martin on Amazon.

How long have you been in business?

Haggerty's Music has been open since 1963. Our store is located at 515 Mount Rushmore Road, Rapid City, South Dakota.

Do you offer instrument repair?

Yes. Our certified technicians handle everything from routine setups to full restorations across fretted, orchestral, and band instruments. Our team holds certifications from Taylor Guitars, Yamaha, and other leading brands. Learn more HERE.

What brands do you carry?

Our core guitar brands include Taylor, Martin, Gibson, Fender, PRS, Epiphone, Suhr, Eastman, Gretsch, Luxxtone, Novo, Jackson, Charvel, Legator, and Yamaha among others. These are also the most searched brands on our site, so each has a dedicated collection page.

Do you offer music lessons?

Yes. We offer music lessons. You can find out more HERE.