---
product_id: 700743601
title: "MXR M238 Iso-Brick Effects Pedal Power Supply 9V,18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle With Dunlop 18V Power Adapter, True Tune Tuner, Multi-Tool, Patch Cables and Dunlop Picks"
brand: "tonebird"
price: "€ 539.01"
currency: EUR
in_stock: true
reviews_count: 5
category: "Tonebird"
url: https://www.desertcart.nl/products/700743601-mxr-m238-iso-brick-effects-pedal-power-supply-9v-18v
store_origin: NL
region: Netherlands
---

# Special noise-reduction circuitry 10 fully isolated outputs Variable 6V-15V outputs for vintage sag MXR M238 Iso-Brick Effects Pedal Power Supply 9V,18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle With Dunlop 18V Power Adapter, True Tune Tuner, Multi-Tool, Patch Cables and Dunlop Picks

**Brand:** tonebird
**Price:** € 539.01
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your pedals with precision and style — never miss a beat!

## Quick Answers

- **What is this?** MXR M238 Iso-Brick Effects Pedal Power Supply 9V,18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle With Dunlop 18V Power Adapter, True Tune Tuner, Multi-Tool, Patch Cables and Dunlop Picks by tonebird
- **How much does it cost?** € 539.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/700743601-mxr-m238-iso-brick-effects-pedal-power-supply-9v-18v)

## Best For

- tonebird enthusiasts

## Why This Product

- Trusted tonebird brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Vintage Vibe on Demand:** Two variable outputs emulate classic battery sag for authentic retro warmth.
- • **Compact & Rugged Design:** Lightweight, pedalboard-friendly housing built to withstand the road.
- • **All-in-One Tonebird Bundle:** Includes Dunlop 18V adapter, True Tune tuner, multi-tool, patch cables, and picks—gear up like a pro.
- • **Power Your Entire Rig, Quietly:** 10 isolated outputs eliminate ground loop noise for pristine tone every gig.
- • **Tailored Current for Every Pedal:** Outputs range from 100mA to 450mA, powering everything from analog to digital effects.

## Overview

The MXR M238 Iso-Brick is a compact, lightweight power supply featuring 10 fully isolated outputs with voltages from 9V to 18V, including two variable outputs adjustable between 6V and 15V to replicate vintage battery sag effects. Its noise-reduction circuitry ensures silent operation, while the included Tonebird bundle offers essential accessories like a Dunlop 18V adapter, True Tune tuner, multi-tool, patch cables, and picks, making it a complete, road-ready solution for professional pedalboard setups.

## Description

The 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", 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.

Review: The item was packed properly. The power supply works perfect for my needs and I run a lot of pedals. The kit is great because of all the little things that comes with that are actually usable like the tool the pics and the tuner. I already have really good patch cables so the ones that came with it are just back ups for now. I would recommend getting this kit when it’s on sale if possible just because of the value at all really. MXR makes really good stuff and I like that this supply has a range of miliamps to work with. I have no issues with powering my signal chain, and I do not have any interference from the power supply either. I like that the actual power supply for the brick is a decently long cable as well so that’s nice.
Review: Todo excelente, embalaje perfecto, muy bien acomodado, completo el paquete tal como en la imagen

## Features

- Light and pedalboard-friendly with 10 fully isolated outputs ranging from 9V to 18V—including two variable 6V–15V outputs
- Special noise-reduction circuitry for quiet operation
- Two 9V outputs at 100mA, two 9V outputs at 300mA, two 9V outputs at 450mA, two 18V outputs at 250mA
- Two variable outputs adjustable from 6V to 15V at 250mA. The two variable outputs can be used to emulate voltage "sag", drained battery effect sought by many vintage tonechasers
- Comes with Tonebird bundle, featuring Dunlop ECB009 power supply, True Tune tuner, Groovetech multi-tool, two high-quality patch cables, Dunlop pick variety pack (6), Barrel connector cables (10)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DHDG3PD6 |
| Item model number | M238-TBB |
| Manufacturer | Tonebird |
| Package Dimensions | 16.89 x 13.31 x 10.21 cm; 1.13 kg |

## Product Details

- **Amperage:** 450 Milliamps
- **Brand:** Tonebird
- **Colour:** Silver
- **Connector type:** Barrel Connector
- **Item weight:** 1.13 Kilograms

## Images

![MXR M238 Iso-Brick Effects Pedal Power Supply 9V,18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle With Dunlop 18V Power Adapter, True Tune Tuner, Multi-Tool, Patch Cables and Dunlop Picks - Image 1](https://m.media-amazon.com/images/I/71GKFYyidIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***I on 9 October 2025*

The item was packed properly. The power supply works perfect for my needs and I run a lot of pedals. The kit is great because of all the little things that comes with that are actually usable like the tool the pics and the tuner. I already have really good patch cables so the ones that came with it are just back ups for now. I would recommend getting this kit when it’s on sale if possible just because of the value at all really. MXR makes really good stuff and I like that this supply has a range of miliamps to work with. I have no issues with powering my signal chain, and I do not have any interference from the power supply either. I like that the actual power supply for the brick is a decently long cable as well so that’s nice.

### ⭐⭐⭐⭐⭐ Review
*by C***S on 19 January 2026*

Todo excelente, embalaje perfecto, muy bien acomodado, completo el paquete tal como en la imagen

### ⭐⭐⭐⭐⭐ Review
*by K***S on 14 October 2025*

Been an amazing power supply, supplies my evh pedal board I have every evh pedal including the ball EVH delay, every pedal made that's evh my dream board and the 75th anniversary Peterson strobe stop and it runs it all perfectly.

## Frequently Bought Together

- MXR M238 Iso-Brick Effects Pedal Power Supply 9V,18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle with Dunlop 18V Power Adapter, True Tune Tuner, Multi-Tool, Patch Cables and Dunlop Picks
- MXR Patch Cable 6 in|15 cm - 3 Pack (3PDCP06)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-25*