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MXR M238 Iso-Brick 10-output Isolated Guitar Pedal Power Supply , $170.99 - Add to Cart Skip to Product Information

MXR M238 Iso-Brick 10-output Isolated Guitar Pedal Power Supply

Pedalboard Power Supply with 8 Fixed Voltage Outputs and 2 Variable Voltage Outputs
MXR M238 Iso-Brick 10-output Isolated Guitar Pedal Power Supply
MXR M238 Iso-Brick 10-output Isolated Guitar Pedal Power Supply
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MXR M238 Iso-Brick 10-output Isolated Guitar Pedal Power Supply
In Stock!

$9 Price Drop!
Was:

Flexibility and Convenience for Your Pedalboard

This article was Written By

Our Product Research Team

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The MXR Iso-Brick pedalboard power supply is proof that MXR has a finger on the pulse of guitar players and their needs. As always at MXR, they recognized a need for a pedalboard power supply that fits with the way music makers play and the gear they use to make their music - enter the Iso-Brick. Boasting 10 fully isolated outputs that are optimized to handle a wide range of pedal types - vintage or brand new, analog or digital - MXR's Iso-Brick is just right no matter what your pedal pleasure may be.

MXR Iso-Brick Pedalboard Power Supply at a Glance:
  • Modern or vintage, digital or analog - the Iso-Brick has you powered
  • Easy to add to any effects set up
Modern or vintage, digital or analog - the Iso-Brick has you powered

MXR realizes that the world of effects has grown. They understand that these days a lot of musicians use a combination of digital and analog pedals, so the MXR Iso-Brick outputs are broken down to give you a variety of voltages and currents. You'll have two 9-volt outputs at 100mA, two 9-volt outputs at 300mA, two 9-volt outputs at 450mA, and two 18-volt outputs at 250mA - Sweetwater's guitar experts know that having this much flexibility from your power supply will open up your world of pedalboard possibilities. And if that's all the Iso-Brick gave you, it would still be a great solution to your pedal power problems. But what makes the Iso-Brick the coolest thing to ever hit your pedalboard are the two variable voltage outputs. Adjustable from 6-volts to 15-volts at 250mA, these outputs are perfect for powering your hungriest pedals or for plugging in those vintage pedals you spent years looking for only to realize modern power supplies are close, but just not right. These variable outputs also give you the opportunity to pull even more tones out of your current pedal rig by allowing you to redefine your sound using voltage - without soldering or worrying about sparks flying.

Easy to add to any effects set up

MXR really went above and beyond to ensure that the Iso-Brick is everything you need from a pedalboard power supply. From the LED status indicators that keep you apprised of what's going on with each pedal you have plugged into it, to making sure you have flexibility in mounting options when you add it to your already crowded pedalboard, the Iso-Brick is simply the easiest way to clean up your effects rig and be done with that spaghetti bowl of power cables. And it's not just for guitar players - bassists, keyboard players, synth-heads - if you use multiple pedals to get your tone, you need the Iso-Brick!

MXR Iso-Brick Pedalboard Power Supply Features:
  • A rugged, reliable, and compact pedalboard power supply
  • Modernized for your digital effects pedals
  • Great for vintage analog pedals to get the tone you're after
  • LED indicators keep you aware of pedal status
  • Includes a right-angled power cable for pedalboard friendly mounting flexibility
  • Variable-voltage outputs let you change tone using voltage
Get the most out of your pedalboard with the MXR Iso-Brick!

Warranty Info

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Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.