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Supplying quiet, noise-free DC power, the Mini Iso-Brick Power Supply provides you with confidence that your pedalboard will stay powered from gig to gig. Whether you need a space-saving solution for your downsized travel board or you just need to power a small, carefully curated selection of tried-and-true staples, this little box has what you need.
MXR Mini Iso Brick Power Supply Features
Takes up less space than a candy bar
Supplies quiet, noise-free DC power to wide range of pedal types
Equipped with five fully isolated outputs to eliminate obnoxious, gig-ending ground loop noise
Four 9V outputs with one switchable 9V/18V output
Handles both negative and positive grounds
Enough current to accommodate almost any pedal, analog or digital
Includes splitter cable to connect two pedals to a single output
LEDs let you know all your connections are solid
Lightweight and built like a tank
First, let’s talk outputs. The Mini Iso-Brick Power Supply has five, and each is fully isolated to eliminate obnoxious, gig-ending ground loop noise. Four of the outputs supply 9 volts of power at 300mA, while a fifth can be set to provide either 9 volts or 18 volts at 800mA depending on your needs. With a generous amount of current on tap and the ability to handle both negative and positive grounds, these outputs will accommodate almost any pedal, analog or digital.
And don’t let the five outputs restrict you—if you need to add an extra pedal, the Mini Iso-Brick Power Supply has you covered. It comes with a splitter cable that can be used to connect two pedals to a single output, provided they require the same voltage and you don’t exceed the output’s current rating. You can do this with all of the outputs simultaneously—just purchase the extra cables to do so.
Finally, troubleshooting can be a hassle on dark stages, so the Mini Iso-Brick Power Supply comes equipped with LEDs to let you know that all your connections are solid. Combine that with a lightweight housing that's built like a tank,
Warranty: 1 Year; To activate your warranty, please save your sales slip and register your product within 14 days of original purchase.
MXR Mini Iso Brick Power Supply
Item #:
DUN MINIISOBRICK
Manufacturer Part Number:
M239
UPC:
710137108165
Customer Reviews
4.9
Based on 16 reviews
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Jeff K. 🇺🇸
Verified Buyer
This is the king of
This is the king of my pedalboard organization center. No more batteries , no more weak signals.
Published date
12/27/25
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Coleman C. 🇺🇸
Verified Buyer
Does what it needs to
Does what it needs to do. Even Smaller than expected, which is great. Seems to get a little warm during long use, but doesn’t seem to hurt anything.
Published date
02/15/25
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Rebecca P. 🇺🇸
Verified Buyer
Everything you need in a
Everything you need in a compact version. I would recommend this mini brick to my other musician friends. I have been greatly satisfied with all m to other purchases.
I use two of these right now to power a Nano + with 7 pedals on it. Works great.
Published date
03/04/23
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John S. 🇺🇸
Verified Buyer
Best in class!!!
This is actually the 4th ISO brick from MXR. I have 2 of the ISO 10s and now 2 of the ISO 5s. It’s not that they keep breaking it’s quite the contrary. The ISO 10 is awesome because 2 of the 10 spots you can adjust the voltage with a dial so you can run things like the EHX Goodvibes Univibe because ...
Published date
12/27/22
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Questions & Answers
1 answered questions
Darren
Verified User
Q: Does this come with the input power cable?
Answers on Content by By AMS Customer Service on Thu Dec 04 2025
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