Best Guitar Pedal Power Supply Guide 2022

Guitar Pedal Power Supply Overview

With as many effects on the market today, the need for high quality, noise free guitar pedal power supplies is at an all-time high.

Manufacturers today are producing very high-quality effects that have some of the best sounds ever created. Because the competition is so high, the need for more advanced circuits has become the only way to compete as a pedal maker.

With the need for more advanced circuits, a proper power supply is now of great importance for optimal results. You don’t want to spend good money on incredible pedals only to be limited on their performance because of a cheap, noisy power supply.

Best Guitar Pedal Power Supply Guide

Yet we see it all the time, players asking questions about why their new models are so noisy.

Some of the more common complaints are:

  • Buzz
  • Humm
  • Bad Sounds
  • Poor Performance

And in most cases the user will blame the pedal for being junk or noisy. When all along it’s being powered with an ultra cheap supply, creating all kinds of issues.

We have broken our tests into a number of outputs.

Quick Recommendations

We have a number of reviews that go into more detail about our pedal power supply selection. But if you are in a hurry, here are our top selections. Depending on your budget, you will find good results from these 3 models.

If you have more time, we have 10 power supply reviews further down the page.

Voodoo Lab Mondo


Strymon Ojai


Guitar Pedal Power Supply

Pedal Power ISO 5

Less Is More

Guitar Pedal Power Supply

Power Supply Requirements

In most cases, a lot of the reasons a user ends up with a poor performing stomp box power supply is because they just don’t know any better. I mean, let’s face it, we are guitar players and while some of us are electronic engineers, the majority are not.

So let’s consider your needs. This is really the only way to get the right guitar pedal power supply for your devices. Once we find out what you require, our list of the best supplies below will be easier to navigate.

Here are some of the things to consider when selecting a power supply:

  • Number of pedals you want to power (Both current and future units)
  • Voltage requirements of each device
  • Current requirements of each unit
  • Will it mount to a pedal board?

Lets touch on these points quickly:

Number of Pedals

This is one of the more important things to consider. The more devices you run, the more you want to make sure your pedals have their isolated power source.

You may have heard this term before, “isolated”. This means each pedal will have its own power source and is not being daisy-chained or shares a source with others. The advantage of this could mean no hum or buzz.

Guitar Pedals

Input Voltages

While most pedals run on 9 volts DC, some have other requirements. Sometimes you may find some that require 12 or even 18 volts DC. And sometimes you may find some that need 12V AC!

You will want to make sure you know what your voltage requirements are from your pedals in order to get what you need. Do not just assume it will run on 9 volts DC.

Input Current(mA)

Another important consideration is the current consumption each pedal will require. While most high-quality power supplies are designed to provide enough for your device, you will want to verify this before shopping. 

If a pedal does not get the current it requires to work during normal use, it will not perform optimally.

1 Spot makes a meter that can help you realize what your current needs might be. It’s also a cable tester as well, which makes this one handy tool to have around! We touch on it more later in the article.


Size matters in this regard. If you are going to run a smaller pedalboard and buy an extra-large supply, it may not mount the way you may have hoped.

While buying a big power supply just in case is not a bad idea, you do want to make sure it fits onto your board.

10 Best Power Supplies

Once you have discovered your needs, you can then select the correct guitar pedal power supply for your rig.

If you want more information and are not quite sure what you need, please continue reading. We have created a guide to help you right after our recommended power supplies.

Our guide will cover much more, so we encourage you to read up if you want to learn more about guitar pedal power supplies!

If you’re ready to check out the products we recommend, let’s go!

Voodoo Lab Pedal Power Mondo

Voodoo Lab Pedal Power Supply Mondo


  • Isolated, fan cooled, power supply
  • 12 outputs
  • 6 high current outputs
  • 2 outputs with sag simulation
  • Includes various cables
  • Toroidal transformer for low noise

Power outputs:

  • 2 x 9V/12V 400mA
  • 2 x 9V 400mA
  • 4 x 9V/12V 100mA
  • 2 x 9V/L6 250mA
  • 2 x 9V/SAG 100mA

Additional Information

  • Size: 10.75″ x 3.4″ x 1.87″
  • Weight: 2.9 lbs
  • Company: Voodoo Labs
  • Manual

Best suited for: guitar players who need a lot of outputs for very large boards. The high current supply will power any device available and has some great features like sag simulation.

This is one heavy-duty power supply! It’s capable of some very high current, allowing a majority of 9-volt devices to be used. If it requires anything more than what this unit can deliver, it probably shouldn’t be on your board!

With my 10 devices loaded up with the pedal power Mondo, I was able to satisfy all demands and experienced good operation. The pedals all responded like they should and there was zero added noise.

I even went ahead and daisy-chained 4 pedals together using one of the high current outputs and the performance was rock solid.

This unit also has a sag option that simulates a dying battery. This is because some pedals sound perfect when the battery is less than half of its capabilities. Using an overdrive with a sag output, I was in fact able to hear a difference in how it performed.

Truetone 1 SPOT PRO CS12

1 Spot Guitar Pedal Power Supply


  • Isolated power supply
  • 12 outputs
  • Variable voltage control
  • Switchable voltage options
  • Includes cables
  • Includes mount brackets

Power Outputs:

  • 2 — 9V 250mA
  • 2 — 9V 500mA
  • 2 — 18V 100mA
  • 1 — 9V AC 800mA
  • 4 — 9V/12V 100mA
  • 1 — 4V-9V 100mA

Additional Information

Best suited for: guitar or bass players with mid-sized pedal boards and high power requirements. The CS12 designed to provide variable sources and do so without injecting noise into any circuit.

The Truetone 1 spot CS12 is one heavy-duty guitar pedal power supply!

The CS12 is capable of 3000mA maximum current, 12 isolated outputs that provide multiple voltage options and comes with pedal train mounting brackets and cables.

There is also a 9V AC output to truly cover all voltages that you might find on commercial products.

There are a few switchable outputs that can be set to either 9 or 12 volts from a toggle on the bottom of the unit, as well as a variable that can be set to 4 volts if desired.

The supplied cables will aid in getting pedal polarities correct, as well as a battery adapter.

This is one serious supply for optimal performance!

When we used it to power our pedal board filled with 10 various devices, we had no issues. Each device was drawing the required power and there was no added noise to any of the outputs.


MXR Guitar Pedal Power Supply


  • Isolated power supply
  • 10 outputs
  • Variable voltage control
  • Switchable voltage options
  • Includes cables
  • Includes adapters

Power Outputs:

  • 2 – 9V @ 100mA
  • 2 – 9V @ 300mA
  • 2 – 9V @ 450mA
  • 2 – 18V @ 250mA
  • 2 – Variable 6V to 15V @ 250mA

Additional Information

  • Size: 4.7″ x 2.9″ x 1.8″
  • Weight: 1.8 lbs
  • Company: MXR
  • Manual

Best suited for: pedal boards that require conventional voltages with minimal variation. This is a great supply for mid-sized boards.

The MXR Iso-Brick power supply is another high quality unit for noise free operation.

The Iso Brick is capable of a 2000mA maximum current, 10 isolated outputs provide a range of DC voltage with variable options from 6 to 15V DC. This is another unit that will provide all DC voltage requirements you might find in today’s commercial and power hungry pedals.

This unit is very sleek and easy to mount to many boards.

Friedman Power Grid 10

Friedman Guitar Pedal Power Supply


  • Isolated power supply
  • 10 outputs
  • Includes cables
  • Ultra quiet operation

Power Outputs:

  • 10 – 9V @ 350mA

Additional Information

  • Size: 4.5″ x 6.75″ x 1.75″
  • Weight: 1.5 lbs
  • Company: Friedman

Best suited for: players who need a basic 9 volt supply with high current. This is great for a mid-sized board that uses basic effect pedals.

While the Friedman power grid 10 is a very simple supply, we chose it because of its dead quiet operation.

This unit offers a simple 10 outputs at 9V DC and is designed to be very simple. It will supply most pedals on the market, but unlike other isolated power supplies, this one is quiet.

So if you have very sensitive devices that seem to be noisy even with an isolated power supply. This will be the model for you!

Strymon Zuma

Strymon Zuma


  • Fully Isolated power supply
  • 9 outputs
  • 48watt Maximum Output
  • 9 volts
  • 2 voltage selectable outputs
  • Cables included

Power Outputs:

  • 7 – 9V 500mA
  • 2 – Adjustable: 9V, 12V, 18V

Additional Information

  • Size: 6.8″ x 3.3″ x 1.8″
  • Weight: 1.25 lbs
  • Company: Strymon

Best suited for: pedal boards that require high power demanding devices. The ability to add on more power supply attachments makes this a smart choice.

Strymon has been making awesome products since the beginning, the Zuma is no exception. The anodized aluminum case looks great, just like their other pedals. Their platform to allow you to add more supplies and chain them together is genius.

This allows players to start with the needs of their current pedal board, but add more as they go along. This model is capable of a stunning 48 watts of power, which will happily power your devices all day long.

2 adjustable outputs is very convenient as sometimes certain devices require more voltage to operate.

When connected to our board, the pedals and devices were all running happily without any noise added to their signal. The Zuma is double isolated and so this is about as quiet as it gets.

Mission Engineering 529i

Mission Engineering 529i


  • Rechargeable Isolated power supply
  • 8 outputs
  • Internal battery to power without external supply
  • 9 volt outputs
  • High current
  • Cables included

Power Outputs:

  • 2 – 9V 500mA
  • 6 – 9V 300mA
  • 5V USB

Additional Information

Best suited for: a player who needs a supply that also holds a charge. With a built-in battery, you can use this supply away from mains power.

The 529i is a different concept than the rest. With this device, you charge the battery first and then use it to power your pedals. This is great for anyone who is going to need a supply that is self-sufficient.

With a run time of 4 hours at 500mA loaded, you have a ton of time to power before needing a recharge again.

When I used this supply on my board, I was able to get clean, noise free power for all of my pedals. There is even a 5 volt USB connector that I was able to use to power my lighting. This way it doesn’t take up a valuable output, just for lighting.

The size is very small, and it’s light, which is great for mounting under smaller boards where space is tight.

Voodoo Labs Pedal Power 2 Plus

VL Guitar Pedal Power Supply


  • Isolated power supply
  • 8 outputs
  • Short Circuit Protection
  • Variable outputs
  • Switchable Outputs
  • Cables included

Power Outputs:

  • 4 – 9V/12V 100mA
  • 2 – 9V 250mA
  • 2 – 9V 100mA

Additional Information

Best suited for: anyone who needs a 9 volt supply for a mid-sized pedal board. There is also one 12 volt output for any variation.

The Voodoo Labs pedal power 2 plus is a very dependable and quiet supply.

It’s capable of many voltages, even variable, which is called “sag” on the unit. Changing between them is done simply using the switches on the bottom side of the unit.

The device is built with a toroidal transformer, which according to Voodoo Labs is the secret to the quiet operation it offers.

It offers 8 outputs for a total of 1100mA max for the brick, and for a lot of players will be plenty.

If there is any reason to ever need to replace this unit, it will simply be for more outputs.

Strymon Ojai

Ojai Guitar Pedal Power Supply


  • Isolated power supply
  • 5 outputs
  • High current outputs
  • Daisy chain more Ojai’s
  • Dead Quiet
  • Cables included

Power Outputs:

  • 5 – 9V @ 500mA

Additional Information

  • Size: 3.2″ x 2.3″ x 1.3″
  • Weight: 1 lbs
  • Company: Strymon
  • Manual

Best suited for: pedal boards that require 9 volts with high current capabilities. This design also provides the opportunity to combine with add-ons to increase capabilities as your pedal board grows.

The Strymon Ojai is one very neat little design. This unit, while simple, can handle 500mA per output!

What is really cool about it, is that you can connect more Ojai models together to expand to more outputs. So if a player starts with a small board and eventually upgrades, you can simply buy another Ojai and connect the two together, expanding the amount of power options!

Strymon has also built this unit to be very easy to mount due to its size, but it’s also super light! And somehow it can supply current by the boat load.

The only limitation is that you will only get 9 volts from each output, but for a lot of players, this is no big deal.

Pedal Power ISO 5

ISO 5 Guitar Pedal Power Supply


  • Isolated power supply
  • 5 outputs
  • High current output
  • Multiple voltages
  • Very Quiet
  • Cables included

Power Outputs:

  • 3 – 9V @ 100mA
  • 1 – 9/12V @ 400mA
  • 1 x- 18V @ 100mA

Additional Information

Best suited for: smaller pedal boards with only a few devices. The opportunity to use different voltages is available, but the outputs are limited.

The Voodoo Labs ISO 5 is a great offering for those players who don’t have a lot of pedals and just need a simple supply.

This unit is very quiet and gets the job done perfectly while still offering a high current output and some common voltage options.

It’s small, light, simple and easy to mount. Need a simple, quiet power supply?

You found it!

Voodoo Lab Pedal Power X4

Voodoo Labs X4


  • Isolated power supply
  • 4 outputs
  • Very Quiet
  • Cables included

Power Outputs:

  • 4 – 9V DC

Additional Information

Best suited for: players who have up to 4 pedals that require a basic 9 volt output. The pedal power X4 is small and so there is no need for a board with this one.

Another Voodoo Labs masterpiece! This unit is for those who have minimal pedals but still want optimal performance.

Being an isolated power supply, the dead quiet performance is top-notch.

And being as small as it is, this model is easy to mount and very portable!

Single Output Guitar Pedal Power Supplies

While some people might just be getting started with guitar pedals, or just have simple needs, then a single power supply might be what you are looking for. In this case, we recommend the 1 spot slim 9 volt adapters.

This adapter is capable of high current to allow you to expand to a daisy chain to power a couple of pedals before moving up to a brick. These are very handy adapters and are configured to have a plug polarity for most models today.


  • High Current
  • 9 Volts
  • Slim unit
  • Expandable via daisy chain
  • Dependable

Guitar Pedal Power Supply Guide

When it comes to selecting a guitar pedal power supply, there are a few things to consider. If you are new to this, now is a great time to learn about how this works and why it’s important to know!

Selecting the right device to work with your new pedal is crucial for optimal performance, but also for polarity.

Purchasing a pedal with a plug that is wired in reverse polarity could do damage. And most manufacturers will not repair it under warranty if you damage it this way.

So it’s very important to know these things to make sure you do not cost yourself more when you could have just spent some time reading this guide!

Benefits of a Power Supply

There are a number of reasons why a guitar pedal power supply is needed. But we are going to touch on the more commonly talked about reasons.

Choosing the Right Type

The question comes up on forums all the time: So why have a power supply at all? Don’t most pedals use batteries?

And yes, there are many pedals that use batteries or can. In some cases this can be handy, but is not economical.

With the great power supplies available today, batteries are really no longer needed. There are more and more manufacturers making pedals without compartments for them.

Let’s face it, that can be expensive! Not only that, they get thrown away and end up in landfills.

Today, with the technology we have available, power supplies can be used to do the same thing as a dying battery to get that brown sound.

Simply get a device with a variable output, and you basically have the same thing without the expense and hassle of batteries.

Ultra life Battery

Unwanted Noise

Another reason and probably the most important reason to have a good isolated power supply is to prevent unwanted noise.

Daisy-chaining pedals together and powering them with one adapter is simply a bad idea.

Can it work? Oh yea, there are some stomp boxes that are not as sensitive and can share a supply all day long.

But if they don’t, do you know how to troubleshoot that? Do you know if the pedals are performing optimally daisy-chained together? Most players do not.

Most players blame their amps or pedals for the buzz or hum they hear, when really it’s the power supply.

By using a high quality isolated model, you will get a far better experience overall.

Model Ratings

When selecting a power supply, there are some things you need to consider. All of this information is obtainable from your pedals and their manufacturers.

Voltage Output Rating

Every guitar pedal will require a certain voltage rating. The more common are 9, 12, 15, and 18 volts DC.

90% of all devices will use 9 Volts DC, however, and so this is a more common voltage rating found from wall warts as well as isolated power supplies.

When you are looking at different models, you will always want to match the voltage that your pedal requires with the correct output.

If you are not very experienced with them, then just simply match the voltages. No more, or less, otherwise this could result in damage to the pedal.

If you are more experienced with the requirements and know that you have a distortion stomp box that sounds better when its supplied voltage is lower than recommended, then get a power supply with variable control or a “Sag” feature.

Also be aware that some pedals might require an AC voltage instead of a DC.

Current Output Rating

Current or amperage requirements differ greatly. Some analog pedals require very little to operate, while some digital devices need a lot! And because there are different requirements, it’s recommended that when sourcing a power supply that you find out what your pedals will need for current. 

A current starved unit will not operate correctly, leading to poor results. Another issue with using an underrated power supply is that you could do damage to it by asking for too much. Overheating will result when using an underrated model, causing it to burn out and fail.

So you want to make sure that your device can provide what the pedal needs or more. If you have a supply rated for 800mA and your model requires 50mA to run normally, this is great! 

You will not do damage to your pedal if it’s capable of more current. You want your model to either match what the needs or more. Much more is ok too. 

The pedal will simply take what it needs, and the power supply will run cool and happy. Not sure how to find out what is required?

1 Spot makes a great current measurement meter that you can use to test this. It also doubles as a cable tester too. It’s a super handy tool to have around and is suggested if you own pedals.

Polarity Rating

Polarity is very important with guitar effects. There are several people who do not realize this is something to watch out for. There are 2 connections that are made when you plug your barrel jack into a pedal.

These are a positive (+) connection and a negative (-) connection. Your barrel jack on a power supply could be wired differently depending on the device, and so you have to verify if the polarity matches that of your pedal.

If the polarity is not correct and reversed, you can expect damage to result.

pedal polarity

These are the symbols you want to look for when trying to find polarity. Most power supplies will have these diagrams on the unit itself or in the instruction manual.

Most pedals will also have these symbols marked on them or can be found from the manufacturer. You will need to verify that the devices have the same polarity and markings.

This will verify that the polarity is the same and correct. If your power supply has the opposite symbol, do not use it in this case. They have to be the same!

The most commonly used configuration is negative pin, positive sleeve.

If you find you have a power supply that is the wrong polarity for your pedal, a lot of the devices we have recommended come with cables that will change that. This can be very helpful.

If not, a Mr. Power converter cable will change the polarity and help make them work together.

Connection Methods

As we mentioned throughout this guide, there are two main types of connection methods used to power pedals. Daisy Chains and isolated connections. They are both used and there are products on the market to provide both options.

But is one better than the other? Which one should you use?


An isolated connection provides a pedal with its own power source which is electrically separate from any other. Types of isolated outputs would be a wall wart that services ONE pedal. The models we recommended above provide isolation between each output, all in one unit.

When an output is isolated, it has the advantage of powering one pedal, which keeps current and voltage supply consistent. But most importantly, it prevents unwanted noise.

When dealing with an audio product, you do not want noise! This can consist of buzz, hum, interference and more. Some are more sensitive than others and so issues can travel down stream into others.

When isolating a pedal to its own supply, as long as the model itself is designed to be dead quiet, you will get great results.

Daisy Chaining

Daisy chain adapter

Daisy-chaining is the method of connecting pedals together at their power input and supplying them from one wall wart (adapter) or one output.

This method can work and could be a source of clean, quiet power. But if a noisy pedal is used in the chain, this can potentially work its way into the rest of the effects as well.

Another disadvantage is that as you connect them together in a chain, the overall current requirements increase. This means the total sum of all device current requirements adds up and in some cases may surpass what the output can supply.

This can cause damage or provide poor results to the entire chain of pedals if the user is not aware of this.

Our recommendation is to use isolated outputs for each unit for the very best results.

Guitar Pedal Power Supply FAQ

Below you will find answers to the most frequently asked questions.

Do Guitar Pedals Come With Power Supplies?

In some cases, you will find that an effect’s device will come with a power supply. But this is only normally the case when a pedal or effects unit uses a voltage or polarity that is different from the universally used ratings.

In most cases, if a device is designed using the common power supply requirements, it will not come with one. The reason manufacturers do not provide them is that most players use more than one pedal and don’t want tons of cords to deal with.

If every manufacturer supplied one, the cables and cords would be messy and hard to deal with. If a player uses more than one pedal, they will normally opt for a power supply brick for the ease of use and the need for only one plug socket.

How do I stop my guitar pedals from humming?

If you have many daisy-chained pedals and one power supply, the first thing you want to do is remove units until you stop the humming.

If this doesn’t reveal the issue, you can also use batteries in each of the pedals to see if the power supply is the issue. This is also a great way of tracking down noise. Do one at a time to see if it’s only one device.

Ultimately, if you can afford to, buy yourself a high quality model right from the start and isolate each pedal. This will help you eliminate the unit as the issue with hum.

Just remember, there are more issue with hum than just the power supply, but you may as well start there first.

Also, if you’re running more than one pedal in a 4 cable method configuration, for example, you may have to test all cables as well.

Can I use a 12v power supply on a 9v guitar pedal?

Unless the manufacturer states that it’s alright to do so, you should NEVER power a pedal with a voltage higher than its rating. Components inside may be rated with a maximum, but that works fine at normal operating requirements.

But if you increase the voltage at the input, this could cause damage and overheating to the components inside.

Is it OK to use a power supply with higher amps?

Yes, using a power supply with a higher current rating is completely fine and suggested. If your pedal is rated at needing 50mA, then you will want that or more. If this means that you use a model rated at supplying 2 amps, that is fine!

The pedal will simply take what it needs and leave the rest.

The issue with current only applies if you are not giving the pedal what it requires. For example, if yours needs 500mA and you only provide a supply with a rating of 250mA, your model will eventually overheat and fail. It will try and give the 500mA, but fail doing so.

So always makes sure to provide your devices exactly what they need or more.

If you are daisy-chaining from one power supply, make sure to add up each pedal current requirements and provide a unit that can cover it all.

Guitar Amp 4 Cable Method
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