The MXR Iso-Brick Power Supply offers up 10 isolated outputs for a swath of voltages and power draws in a pedalboard-friendly size. This noise-free PSU is fully isolated, eliminating any worry you might have about cleanliness of the power in a venue or rehearsal space. With six 9V outputs (two at 100mA, two at 300mA, two at 450mA), two 18V 250mA outputs, and a pair of variable voltage outputs that swing from 6-15V, the Iso-Brick provides clean, safe power for all the pedals on your board...unless you've got more than ten.

Product Specs

  • M238 Iso Brick
  • Silver
  • 2010s
Made In
  • United States

From the Price Guide

Reviews for the MXR M238 Iso-Brick Power Supply
Help another musician by sharing your experience!
  • Biggest bang for the buck!

    Verified Purchase

    This is perhaps THE most versatile power supply out there right now. It's been quiet, reliable, super light and small, easy to mount under the board and has variable and 18v dedicated outs with more than enough 9V milliamps. The only drawback is the VERY cheap wall wart that powers the brick itself.…

    1 person found this helpful

  • Great product

    Verified Purchase

    I love this unit, it works exactly the manufacture said it would, have and will recommend it to more friends.

  • Great unit

    Verified Purchase

    Easy to use, does what it's supposed to. Easy to secure under my Gator pedal board. Would like if it had more high power output plugs. It seems to works well. Rock on.

  • MXR238 Power Supply

    Verified Purchase

    At first glance thus may seem a bit more humble than some of the more popular brands. But I’m here to say this thing is a good product. I run13 pedals with it and since there are 10 various isolated outs, you have to get up to speed with connecting 9V and 18V pedals. It’s important to note, the digi…

  • Smart, powerful.

    Verified Purchase

    I have read a lot of negative review (apparently, some people have experience failure, causing shorted-out pedals!). I have not experienced anything like that.