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Description
bass modulation pedal MXR M306 Poly Blue Octave – Motor City GuitarThe 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. Leveled up. The Poly Blue Octave features four separate octave divisionsone octave down, two octaves down, one octave up, and two octaves upand 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
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.Leveled up.
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 circuit. In polyphonic mode, the circuit 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.
Shipping Notes
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Exchange/Return Notes
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4.6 ★★★★★
Based on 367 reviews
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Product Reviews
★★★★★ 5
Microfiber Has Come a Long Way
Color: 22 - Spa Blue, Size: Queen
I have one of those beds where the head and foot of the bed can be raised or lowered as needed, much like a hospital bed. Except in this case, the mattress is soft but supportive and very thick. If you measure the side from the top edge to the bottom edge of the mattress, it measures a bit over 12 inches. That means, if I want the mattress to actually stay in place it needs to have at least a few inches to tuck under, or it just pulls loose. Many sheets that advertise that they are "deep pocket" sheets often barely go around the mattress, and even clips don't help keep the bottom sheet on. It also means more difficulty in the first place to make the bed if I have to do it myself (I have a "hospital bed" for a reason). I did have two sets of sheets that I loved and were just deep enough to stay on fairly well, but I have had them for several years now, and they have started to get a bit thin in spots and the elastic on the fitted sheet is not as taut as before. Sheets are expensive, but I also have a sensitivity to rough and scratchy material, so the texture had to be something I wouldn't find irritating. The last time I bought "microfiber" sheets was probably when "microfiber" was a new thing, and it usually was some kind of knitted, stretchy material like a t-shirt, but had a tendency to pill badly after a few washings. Still, I needed sheets, and it was winter, and those stretchy knitted sheets were soft and warm, so I ordered two sets of the Extra Deep Queen Sheet Set--one in white, and the other in "spa blue". When they arrived, I was very surprised to see that the quality of the fabric actually mimicked very fine cotton sheets. They were brand new as expected, and they didn't smell or anything, but I do wash things like towels or sheets and some clothing before I use them. They weren't really dirty, so I just washed them in a small amount of detergent and cool water. The directions suggest gentle cycle, but I have a "bulky" setting on my washer that seems gentle enough on sheets but helps avoid issues like the load getting off balance in the tub. I dried it on the low, delicate setting with a sheet of fabric softener to cut down on static and because I wanted a nice scent. The sheets came out beautiful, and have since been used and washed again, and they so far, look and feel even more luxurious than before. I especially appreciate that the manufacturer but a label on the fitted sheet to indicate that the side that was to go on the top/bottom of the mattress. The sheets are VERY deep. More than I require, but now they stay on the bed, no matter how far up or down I move it, or how much I toss and turn. I also bought a set of sheets by another brand, but I really should have just paid the few dollars extra for another set of these. If you are used to those 800-count Egyptian Cotton or those fancy silk and bamboo blend sheets, you're probably going to hate these. But if you ever had to settle for sheets from Dollar General or Walmart, this is going to be a definite upgrade. (My favorite sheets from before I think I ordered online from Sears or Kohl's that were some kind of cotton and synthetic blend. ) Overall, for basic soft, comfortable sheets I can recommend these. They seem to be very warm, so I wonder how "breathable" they would be in the summer, but I tend to be very cold all the time anyway. I love these sheets so far. I'm tempted to order one more set if the other brand ends up being too annoying to deal with.
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Reviewed in the United States on January 26, 2026
★★★★★ 5
Perfect set of sheets
Color: 25 - Burgundy, Size: King
This set of sheets were perfect! They are soft and easy to put on our King size bed which has deep fitted corners. The price was great too!! The burgundy looks just like the picture. They are wrinkle resistant- I washed and dried them before using them for the first time and they were wrinkle free. They are not heavy in weight.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Great Sheets
Color: 35 - Lavender, Size: Queen
I really thought the sheets were really nice. I have been looking for good sheets that didn't cost and arm and a leg. The deep pockets are great. I have a mattress that has deep sides, plus I have a topper on that, so the sheets fit great! They are cooling and comfortable to sleep under. Also, I was able to get the color I wanted, lavender. I will be buying another set and do recommend them highly!
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Good but not great purchase
Color: 02 - Antique White, Size: Queen, Color: 02 - Antique White, Size: Queen
The sheets are soft and fit the bed amazingly!!
Downfall there was a rip in the fitted sheet at one seam. I had to mend it myself as I had to have a sheet to sleep on and a return would take too long. Also a few pieces of thread not properly secured.
I am unsure if I will buy again but the pros are:
Clean packaging
Soft
Comfortable
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Most comfortable pillows for my back
Color: Navy, Size: 26x26 Inch
I have a really bad back along with sciatica so I use these pillows on my recliner chair, one for my back and one under my bottom. They make all the difference in the world. They are soft and squishy yet still offer support. They are a great value for sure. This blue color was about half the price of other colors with was fine with me because I put washable covers on them anyway. I frequently fall asleep on them. My dog loves when they accidentally fall on the floor because he curls up on them and falls asleep. He finds them very comfortable. I can't say enough good about these. They would be great on a bed or couch too or even as a floor cushion. They are high quality, well made pillows.
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Reviewed in the United States on April 8, 2026