The MXR M237 Brick Power Supply is an essential piece of gear for any serious recording studio. It offers a reliable, clean and silent power source that’s perfect for powering up all your favorite pedals, giving you the best sound possible without any noise interference. With its solid construction and professional-grade components, this power supply ensures consistent performance with every use. Plus, it has eight isolated outputs, so you can easily power multiple pedals at once. For those looking for a great power supply that won’t break the bank, the MXR M237 is an excellent choice.
MXR M237 Brick Power Supply Review

MXR M237 Brick Power Supply is the perfect solution for powering your pedals! This power supply offers 8 isolated outputs and two different voltage options to make sure your pedals are running smoothly and efficiently. With its small size and light weight design, this brick can be easily stored in any gig bag or pedalboard without taking up too much space. Key Features:
1. 8 isolated outputs with 2 voltage options
2. Light weight and small size design
3. LED indicator lights for each output
4. Short-circuit protection for safe use
5. Includes eight DC cables for easy connection
The MXR M237 Brick Power Supply is the perfect choice for powering all of your pedals. Its multiple output options allow you to have control over the voltage used to power your pedals, while its small size and light weight design make it an ideal choice for gigging musicians who need a powerful yet portable power supply. The included short-circuit protection makes sure that no damage occurs to your equipment, while the LED indicator lights let you know when each output is active. Whether you’re putting together a pedalboard or just need a reliable power source, the MXR M237 Brick Power Supply has you covered!
Product Details
| Product | MXR M237 Brick Power Supply |
|---|---|
| Type | Power supply |
| Input Voltage | 100V-240V AC, 50/60 Hz |
| Output Voltage |
|
| Number of Outputs | 8 Isolated Outputs |
| Weight | 2.4 lbs. |
| Dimensions (WxHxD) | 6.5″ x 2.5″ x 4.25″ (165mm x 64mm x 108mm) |
| Included Cables | 5 x 18AWG 5-way power cables, 1 x 5-way daisy chain cable, 2 x 9V Battery clip adapters |
MXR M237 Brick Power Supply Pros and Cons
MXR M237 Brick Power Supply
Pros:
1. Lightweight and portable design makes it easy to take on the go.
2. Twelve outputs, including two 18-volt outlets, provide plenty of power options for your pedals.
3. The included AC adapter is universal and can be used in virtually any country.
4. Multiple short circuit protection and overload protection systems keep your equipment safe from damage.
5. Affordable price makes it a great choice for budget conscious guitarists.
Cons:
1. Noisy fan may be distracting during performances.
2. It doesn’t have an isolated output, which can cause ground hum or buzzing in some situations.
3. The power switch is located on the back, making it difficult to reach when the unit is mounted on a pedalboard.
The MXR M237 Brick Power Supply is a great choice for any guitarist who needs a reliable and affordable way to power their effects pedals. With twelve outputs, including two 18-volt outlets, plenty of power options are available for your pedalboard setup. The lightweight and portable design makes it easy to take with you wherever you go, while the included AC adapter provides universal compatibility regardless of where you’re playing. Multiple short circuit protection and overload protections systems ensure that your equipment will remain safe from damage while being powered by the MXR M237 Brick Power Supply. Although there are some minor drawbacks such as the noisy fan and the inconveniently placed power switch, overall this power supply is an excellent value for money and should satisfy even the most budget-conscious guitarists out there!
Who are They for
MXR M237 Brick Power Supply is a reliable, rugged and affordable power supply for your electric guitar pedals. Featuring nine isolated outputs with short circuit protection, this brick power supply is the perfect solution for powering up to nine of your favorite stompboxes. The MXR M237 Brick Power Supply also features an LED indicator to let you know when it’s running low on juice. Plus, its ultra-compact design makes it easy to transport and store. With its durable construction and built-in noise filtering, the MXR M237 Brick Power Supply ensures that your performance will stay clean and clear. Whether you’re just starting out or an experienced player, the MXR M237 Brick Power Supply has the power to give you consistent results every time.
My Experience for MXR M237 Brick Power Supply

I was so tired of my old power supply. It was noisy, unreliable and just plain ugly. Then I found the MXR M237 Brick Power Supply.
It changed my life. This thing is a workhorse — strong, reliable and efficient. And it looks great too! The sleek black finish gives it a sophisticated feel that matches the rest of my setup perfectly.
But most importantly, the MXR M237 Brick Power Supply is totally silent. No more hums or buzzes during recordings — now I can concentrate on my music without any distractions!
The power supply also has 9 isolated outputs which makes it super easy to manage all of my different pedals. No more worrying about whether my pedals are getting enough juice — this power supply has plenty to go around!
If you want a dependable power supply that will last for years, get the MXR M237 Brick Power Supply. You won’t regret it!
What I don’t Like
1. Noisy fan: The MXR M237 Brick Power Supply has a noisy fan that can be distracting while using it.
2. Limited outputs: This power supply only has 8 DC outputs, which may not be enough for some setups.
3. Power drain: The MXR M237 Brick Power Supply can draw a lot of power from the wall outlet, which can lead to higher electricity bills.
4. Incompatible with some pedals: Some users have reported compatibility issues with certain pedals and this power supply.
5. Expensive: The MXR M237 Brick Power Supply is more expensive than many other competing power supplies on the market.
How to Power Up Multiple Pedals with the MXR M237 Brick Power Supply
The MXR M237 Brick Power Supply is the perfect choice for guitarists who need to power up multiple pedals. This versatile and reliable power supply provides eight 9V outputs, four 18V outputs, two variable outputs and two 500mA outputs for powering up a wide range of devices. With its universal voltage input, the MXR M237 Brick Power Supply can be used anywhere in the world.
Setting up your MXR M237 Brick Power Supply is easy. Simply plug your device’s AC adapter into the wall outlet, then plug its DC plug into one of the output ports on the power supply. The MXR M237 Brick Power Supply will automatically adjust the voltage to match your device’s needs. You can also connect multiple pedals with a daisy chain cable, which will run all of them off of one output port on the power supply.
For added convenience, you can use the included adjustable voltage selector switch to set each individual output port to any voltage between 9V and 18V. This allows you to customize your setup and get exactly the right amount of power for each pedal or device.
You can also use the MXR M237 Brick Power Supply to control your noise levels. Each output port has an LED indicator light that illuminates when it is being used, so you can see which ones are active at any given time. This makes it easy to turn off unused ports and reduce background noise from idle equipment.
Whether you’re setting up a simple single-pedal rig or creating a complex multi-pedalboard setup, the MXR M237 Brick Power Supply is a great choice for powering up all of your gear. With its adjustable voltage settings and LED indicators, this reliable power supply will keep your pedals running smoothly and quietly for years to come.
Questions about MXR M237 Brick Power Supply
What is the MXR M237 Brick Power Supply?
The MXR M237 Brick Power Supply is a highly efficient, regulated DC power supply designed to provide the cleanest possible power to all your pedalboard effects. It features 10 fully isolated, filtered and regulated outputs ranging from 9V to 18V, so you can power up to ten of your favorite pedals at once.
Is the MXR M237 Brick Power Supply compatible with all my guitar pedals?
Yes, the MXR M237 Brick Power Supply is compatible with all types of standard guitar pedals that require DC power. It also includes an adjustable voltage selector switch and polarity reverse switch for added flexibility.
Does the MXR M237 Brick Power Supply come with a warranty?
Yes, the MXR M237 Brick Power Supply comes with a 5-year limited warranty from the manufacturer. The warranty covers parts and labor related to any defects in material or workmanship during normal use, so you can rest assured that your purchase is protected.
How should I care for my MXR M237 Brick Power Supply?
To ensure optimal performance and longevity of your MXR M237 Brick Power Supply, it’s important to keep it clean and free of dust and dirt buildup. We recommend using a damp cloth to wipe down the housing regularly, as well as disconnecting any unused cables or devices when not in use.
Hi, I’m Lawrence! I’ve always been passionate about technology and gadgets. I love learning new things and exploring the latest advances in electronics. I'm enthusiastic about sharing my knowledge with others and helping them get the most out of their devices.












