JIM DUNLOP Mini Iso-Brick Power Supply (M239)

For the power that it offers and its size and construction you cannot spend your money any better than this. And if you can find it on sale, even better. Because of the 9 V outlets 350 mA power reserves along with the 18 V having 800 mA of power, you have all the power you need! In my case, I have three 18 V pedals two of which needed 300 mA each, with the other requiring 100 mA. It runs them flawlessly and quietly using a 3 way power cable. That cable, I had to buy separately. It comes with most of the cables you need, including a splitter to run two pedals from a single outlet. Because of the 350 mA of power coming from a single 9 V outlet, you can even daisy chain pedals together from a single outlet as long as you calculate the number of milliamps your pedals need. I only daisy chain my analog pedals. The digital ones I tend to isolate. The only other power supply, I would even consider, is the Cioks DC7. Check it out if you need other voltages. Each power outlet can be configured for four different voltages, and it has tons of reserve power. However, it costs over twice as much as the MXR, but you will not be disappointed.

This power supply is perfect for my acoustic pedal board. All of the cables are included plus 1 extra “Y” cable to run from the power supply to 2 pedals. I use all 5 of the outputs and have no issues. It is quiet, tiny, and does not affect the sound of my guitar.

Love the 18v and extra amperage options. Gigged this power supply on the same board without removing for 3+ years, probably around 500 gigs. Transformer finally quit on me (no voltage showing on multimeter). Thankfully I had my backup OneSpot. Ordered another power supply as this one was out of the one-year warranty. Decent longevity, but consider buying a backup transformer- hopefully my brick is still good when I plug the new one in.

Small and powerful. Excellent for a small pedalboard

MXR has always made quality devices for musicians. The Iso-Brick is another item they offer that is of top notch quality. I'm using it along with a Cusack Pedal Cracker to add compression and reverb stompbox effects to my vocals and it has worked flawlessly. No noise either.

The size and quality of this power supply is unmatched. Love the isolated power - super sturdy and well built. Perfect for mini boards.

As somebody else mentions, the little power input barrel that delivers 110v to the mini iso brick is incredibly touchy - if you move your pedal board around at all - pick it up while powered, nudge it on the floor, whatever - the unit will lose power briefly and send a huge pop through the PA & monitors, and then you lose one or two of the power outputs in the mini brick, never to power up again. Contacted Dunlop and after a bunch of back and forth where I shipped the failed unit to them for inspection, they sent me a new mini iso brick(#2). I wish the story ended there but same thing happened with it, so I contact Dunlop, and they graciously sent me #3, after profuse apologies and lab testing of that 3rd unit. But guess what... 3rd unit just did the same thing, failed on me on stage again. I recommend any other power supply with a proper 110 power cord which plugs directly into the power supply, not this mini iso brick with the wall wart and ultra touchy barrel power input.

Perfect for a small board. No added noise. Reliable. Couldn't ask for more.