MXR M238 Iso-Brick Power Suppl ...

£169.00 In Stock

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MXR M238 Iso-Brick Power Supply

RRP £187.99 Save £18.99


In Stock

10 Available

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Manufacturer's ID: JD-M238

The MXR Iso-Brick Power Supply is small and light with tons of quiet, noise-free DC power on tap ready to run a wide range of pedal types without crowding or weighing down your pedalboard.

Each of the Iso-Brick Power Supply’s 10 outputs is fully isolated, eliminating gig-ending ground loop noise. Whether analog or digital, positive or negative ground, this power box has you covered. The MXR team broke down these 10 outputs to accommodate a variety of voltage and current requirements: two 9V outputs at 100mA, two 9V outputs at 300mA, two 9V outputs at 450mA, two 18V outputs at 250mA, and two variable outputs adjustable from 6V to 15V at 250mA. The two variable outputs can be used to emulate voltage “sag,” a drained battery effect sought by many vintage tonechasers.

On top of all that, the Iso-Brick Power Supply comes in a small, lightweight housing that’s built like a tank. Features power on/off and connection status LEDs. Put this little box on your pedalboard to make sure it runs reliably and quietly gig after gig.


  • Pedalboard-friendly size
  • 10 fully-isolated outputs
  • Quiet, noise-free operation

Customer reviews

Overall Rating 4.9/5 (17 reviews)

Stuart W. - 27/6/2023

Very reliable so far. No noise issues and doesn't take up a lot of space.

Alexander C. - 31/5/2022

Well made. Well featured. Does what it’s meant to do

Richard R. - 14/4/2022

Anders R. - 15/3/2022

Pamela G. - 31/12/2021

Scott Q. - 22/10/2021

Excellent little power supply. Isolated, all included in the box with power cables and things. Does the job

Andy N. - 25/7/2021

The best experience in the shop with Al - the assistant from the shop who was amazing. Thanks, man.

Vince V. - 21/7/2021

Super efficient and makes no noise, would recommend also saves money on batteries

Samuel G. - 23/2/2021

Connor H. - 29/1/2021

It's robust and it just works.

Andre G. - 14/12/2020

steffen b. - 10/11/2020

Nicely built, immediate sound improvement, wall wart could be a problem for some .

shaun h. - 12/8/2020

Great product helpful advice from staff on setting up

Bruce C. - 18/6/2019

Exactly what I wanted and got best prove out there for it

KEVIN Q. - 14/7/2018

For a product I had no intention of buying, it's first class.

Chris M. - 27/2/2018

Great item, no supply noise problems. Great staff, great service.

John B. - 22/2/2018

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