--- title: "mxr iso brick — Niche Verdict: Skip it (33/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/musical-instruments/mxr-iso-brick" last_updated: "2026-07-09T21:46:32.405Z" locale: en meta: description: "a small market ($26K/yr) — mxr iso brick doesn't clear our bar today." "og:description": "a small market ($26K/yr) — mxr iso brick doesn't clear our bar today." "og:title": "mxr iso brick — Niche Verdict: Skip it (33/100) | Amazon United States - Flapen" --- Back to Flapen home # **mxr iso brick** **Skip it****33/100 ** a small market ($26K/yr) — mxr iso brick doesn't clear our bar today. **Market/yr** **$26K** **Growth (1y)** **+74.3%** **Products** **12** **Brands** **4** was 4 a year ago **Sellers** **41** **Price range** **$20.06–$216.84** **Returns** **3.0%** **Rating** **4.5★** **Skip it** Scored 33/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **1** ×0.30 Growth **57** ×0.30 Competition **23** ×0.20 Quality gap **37** ×0.10 Returns **76** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +74.3% year over year. 500250Spike '24Black Friday '24Holiday '24Prime Day '25Spike '25Black Friday '25Holiday '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Jan, Dec · busiest ÷ quietest = 1.8× ## **Competition** - MXR65% - Tonebird30% - Donner2% - lojiraz2% The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack. 4 brands and 41 sellers compete here. **Brands** **4 **—flat was 4 a year ago **Sellers** **41** **Top 5 brand share** **100%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![MXR DC Brick Power Supply](https://m.media-amazon.com/images/I/416hp47I+xL.jpg) [**MXR DC Brick Power Supply**](https://www.amazon.com/dp/B00B5I9GYW) MXR$100.084.6★77318%▲rising 2 ![MXR Iso-Brick Power Supply](https://m.media-amazon.com/images/I/31+Xr+aNq-L.jpg) [**MXR Iso-Brick Power Supply**](https://www.amazon.com/dp/B00U28HYNQ) MXR$167.314.6★21917%▲rising 3 ![MXR Mini Iso-Brick Power Supply](https://m.media-amazon.com/images/I/31lfkYEAt7L.jpg) [**MXR Mini Iso-Brick Power Supply**](https://www.amazon.com/dp/B07KPM6QHT) MXR$101.684.6★41516%▼falling 4 ![MXR M239 Mini Iso-Brick 9v 18v Effects Pedal Power Supply with Tonebird Bundle Including Dunlop ECB004 18-volt Adapter True Tune Tuner Patch Cables and Dunlop Picks](https://m.media-amazon.com/images/I/41dZJ9Mh+0L.jpg) [**MXR M239 Mini Iso-Brick 9v 18v Effects Pedal Power Supply with Tonebird Bundle Including Dunlop ECB004 18-volt Adapter True Tune Tuner Patch Cables and Dunlop Picks**](https://www.amazon.com/dp/B0DF91NJXX) Tonebird$104.464.7★2414%▲rising 5 ![MXR M238 Iso-Brick Power Supply Bundle with Dunlop PVP101 Pick Pack](https://m.media-amazon.com/images/I/511ciQ-VREL.jpg) [**MXR M238 Iso-Brick Power Supply Bundle with Dunlop PVP101 Pick Pack**](https://www.amazon.com/dp/B07FXYJFRL) MXR$177.484.6★2310%▲rising 6 ![MXR M237 DC Brick Effects Pedal Power Supply 9Vx8 and 18Vx2 Outputs Tonebird Instrument Cable ECB009 Adapter Tuner Picks Patch Cables Bundle](https://m.media-amazon.com/images/I/51HVQTk9idL.jpg) [**MXR M237 DC Brick Effects Pedal Power Supply 9Vx8 and 18Vx2 Outputs Tonebird Instrument Cable ECB009 Adapter Tuner Picks Patch Cables Bundle**](https://www.amazon.com/dp/B0CT65XFF2) Tonebird$103.654.4★447%▼falling 7 ![MXR M238 Iso-Brick Effects Pedal Power Supply 9V 18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle with Dunlop 18V Power Adapter True Tune Tuner Multi-Tool Patch Cables and Dunlop Picks](https://m.media-amazon.com/images/I/41IJyJXjNtL.jpg) [**MXR M238 Iso-Brick Effects Pedal Power Supply 9V 18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle with Dunlop 18V Power Adapter True Tune Tuner Multi-Tool Patch Cables and Dunlop Picks**](https://www.amazon.com/dp/B0DHDG3PD6) Tonebird$176.975.0★135%▼falling 8 ![MXR Iso-Brick Pro Power Supply](https://m.media-amazon.com/images/I/314zG8XHqUL.jpg) [**MXR Iso-Brick Pro Power Supply**](https://www.amazon.com/dp/B0CVRYR8LZ) MXR$207.944.8★94%▲rising 9 ![MXR M237 DC Brick Effects Pedal Power Supply 9Vx8 and 18Vx2 Outputs Tonebird ECB009 Power Adapter Barrel Cables Groovetech Guitar Multi-Tool Bundle](https://m.media-amazon.com/images/I/51O4LHCiE9L.jpg) [**MXR M237 DC Brick Effects Pedal Power Supply 9Vx8 and 18Vx2 Outputs Tonebird ECB009 Power Adapter Barrel Cables Groovetech Guitar Multi-Tool Bundle**](https://www.amazon.com/dp/B0F79TND2C) Tonebird$102.994.8★62%▼falling 10 ![Donner DP-1 Guitar Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedal](https://m.media-amazon.com/images/I/51ccAyJ9Q7L.jpg) [**Donner DP-1 Guitar Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedal**](https://www.amazon.com/dp/B00WHLLDWO) Donner$36.044.5★7,8702%—flat 11 ![MXR M242 ISO-Brick PRO Guitar Effects Pedal Power Supply 10 Isolated DC Output 9V/12V/18V Dedicated Output for Power Supply Tonebird Cable Tool Tuner Patch Bundle](https://m.media-amazon.com/images/I/51VW5xCfMTL.jpg) [**MXR M242 ISO-Brick PRO Guitar Effects Pedal Power Supply 10 Isolated DC Output 9V/12V/18V Dedicated Output for Power Supply Tonebird Cable Tool Tuner Patch Bundle**](https://www.amazon.com/dp/B0CT14XGHG) Tonebird$216.843.9★52%▲rising 12 ![18V Power Adapter Compatible with MXR M237 M238 M239 M 237 238 239 Mini Iso-Brick MXRM237 MXRM238 Dunlop DC Brick Multi DCB-10 DCB10 Guitar Pedal 18VDC 2A mxr Power Supply](https://m.media-amazon.com/images/I/31h6kVtUcYL.jpg) [**18V Power Adapter Compatible with MXR M237 M238 M239 M 237 238 239 Mini Iso-Brick MXRM237 MXRM238 Dunlop DC Brick Multi DCB-10 DCB10 Guitar Pedal 18VDC 2A mxr Power Supply**](https://www.amazon.com/dp/B0DYVJ7RFK) lojiraz$20.063.9★162%▲rising ## **Product shelf** All 12 tracked products in this niche. Top sellersNewestTrending [![MXR DC Brick Power Supply](https://m.media-amazon.com/images/I/416hp47I+xL.jpg)**MXR DC Brick Power Supply** MXR**$100.08**4.6★773 reviews](https://www.amazon.com/dp/B00B5I9GYW) [![MXR Iso-Brick Power Supply](https://m.media-amazon.com/images/I/31+Xr+aNq-L.jpg)**MXR Iso-Brick Power Supply** MXR**$167.31**4.6★219 reviews](https://www.amazon.com/dp/B00U28HYNQ) [![MXR Mini Iso-Brick Power Supply](https://m.media-amazon.com/images/I/31lfkYEAt7L.jpg)**MXR Mini Iso-Brick Power Supply** MXR**$101.68**4.6★415 reviews](https://www.amazon.com/dp/B07KPM6QHT) [![MXR M239 Mini Iso-Brick 9v 18v Effects Pedal Power Supply with Tonebird Bundle Including Dunlop ECB004 18-volt Adapter True Tune Tuner Patch Cables and Dunlop Picks](https://m.media-amazon.com/images/I/41dZJ9Mh+0L.jpg)**MXR M239 Mini Iso-Brick 9v 18v Effects Pedal Power Supply with Tonebird Bundle Including Dunlop ECB004 18-volt Adapter True Tune Tuner Patch Cables and Dunlop Picks** Tonebird**$104.46**4.7★24 reviews](https://www.amazon.com/dp/B0DF91NJXX) [![MXR M238 Iso-Brick Power Supply Bundle with Dunlop PVP101 Pick Pack](https://m.media-amazon.com/images/I/511ciQ-VREL.jpg)**MXR M238 Iso-Brick Power Supply Bundle with Dunlop PVP101 Pick Pack** MXR**$177.48**4.6★23 reviews](https://www.amazon.com/dp/B07FXYJFRL) [![MXR M237 DC Brick Effects Pedal Power Supply 9Vx8 and 18Vx2 Outputs Tonebird Instrument Cable ECB009 Adapter Tuner Picks Patch Cables Bundle](https://m.media-amazon.com/images/I/51HVQTk9idL.jpg)**MXR M237 DC Brick Effects Pedal Power Supply 9Vx8 and 18Vx2 Outputs Tonebird Instrument Cable ECB009 Adapter Tuner Picks Patch Cables Bundle** Tonebird**$103.65**4.4★44 reviews](https://www.amazon.com/dp/B0CT65XFF2) [![MXR M238 Iso-Brick Effects Pedal Power Supply 9V 18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle with Dunlop 18V Power Adapter True Tune Tuner Multi-Tool Patch Cables and Dunlop Picks](https://m.media-amazon.com/images/I/41IJyJXjNtL.jpg)**MXR M238 Iso-Brick Effects Pedal Power Supply 9V 18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle with Dunlop 18V Power Adapter True Tune Tuner Multi-Tool Patch Cables and Dunlop Picks** Tonebird**$176.97**5.0★13 reviews](https://www.amazon.com/dp/B0DHDG3PD6) [![MXR Iso-Brick Pro Power Supply](https://m.media-amazon.com/images/I/314zG8XHqUL.jpg)**MXR Iso-Brick Pro Power Supply** MXR**$207.94**4.8★9 reviews](https://www.amazon.com/dp/B0CVRYR8LZ) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**17% *“Well-made”* **Advertised Vs Actual Product**12% *“Works as advertised”* **Value For Money**11% *“It's extremely affordable too which is nice since most boutique power supplies are coming in at $150 plus”* **Strength**10% *“Great power supply”* **Noise Level**7% *“However, once we swithed to the Donner power supply, all the noise went away”* **Size-Overall**6% *“Compact size”* **Functionality-Overall**4% *“Like this bundle, also, and the little headstock tuner works great”* **Gifting Purpose**3% *“Its a gift”* **Correct Contents**3% *“The whole pkg was great”* **Tune Retention**3% *“even can flip polarity when necessary”* ### **What buyers complain about ** **Noise Level**39% *“noisy”* **Advertised Vs Actual Product**14% *“Not fully isolated as advertised”* **Size-Overall**13% *“Loose fit,”* **Quality-Overall**7% *“I would not recommend buying this as quality control is lacking”* **Tune Retention**7% *“I got a high pitch whine when connecting a tuner to the pedal chain”* **Amplification**4% *“I have 5 pedals on the board, they are high quality pedals too, i daisy chained them, my amp and the chain runs on the same outlet, when i unplugged the board the amp was dead quet, plug the board back in even if unplugged from the amp and i got a nasty hum, while the hum is still present about 80% of it was reduced after i powered everything with the Doner block, seems to be built good too, no complaints”* **Thickness**2% *“as thin as a deck of cards”* #### **Top return reasons**- Noise Level22% - Functionality-Overall16% - Defective Material/Parts13% - Advertised Vs Actual Product11% - Size-Overall9% - Compatibility-Overall4% - Connectivity-Overall3% - Value For Money3% - Amplification2% - Add-Ons/Attachments2%