How to Power Guitar Pedals
Updated Nov 13, 2026 · By 
Jonah Mercer · Editorial policy
As an Amazon Associate I earn from qualifying purchases. Buying through the Amazon links on this page costs you nothing extra. Full disclosure
Most guitar pedals run on 9V DC power from a pedal power supply that plugs into a wall outlet and feeds each pedal through its own output. An isolated supply gives each pedal its own output, so a short in one pedal does not cut power to the others. Count your pedals and check their voltage and current draw first.
Count your pedals and check their power needs
Count the pedals on your board and read the voltage and current draw each pedal needs. Most pedals take 9V, and the outputs here feed 9V at 100mA, 300mA or 500mA, so match each pedal to an output with enough current. The JOYO and Tavsou supplies also have 12V and 18V outputs for pedals that need a higher voltage. The Hiree supply has 6 outputs at 9V 100mA and 1 output at 9V 300mA, while the Voodoo Lab supply gives 500mA on each of its 8 outputs.
Use isolated outputs to keep pedals separate
An isolated output gives each pedal its own power, so pedals do not share a supply line. All four supplies here have isolated outputs, and the Hiree, JOYO and Tavsou supplies give each output its own short-circuit protection, so a short in one channel does not stop the others. A supply with a noise filter also helps keep noise out of the signal chain. Plug each pedal into its own output and keep the cables tidy under the board.
Connect the supply and check each pedal
Plug the supply into a wall outlet, then connect each pedal to its own output with a DC cable. The Hiree supply runs on 100V to 240V, and the Voodoo Lab supply runs on 100-240VAC, so both work on a wide range of mains voltages. The JOYO and Tavsou supplies take a DC 18V adapter, so use the adapter that comes in the box. Switch the pedals on one at a time and listen for each one as it powers up.
Mount the supply under your pedalboard
A compact supply fits under a pedalboard and keeps the top clear for pedals. The Voodoo Lab supply is ultra compact for mounting below low-profile pedalboards, and it comes with 3M Dual Lock for mounting. The Hiree supply has a compact body and a 5-foot detachable AC power cord. The Tavsou supply is made of heat-dissipating aluminum alloy, and the JOYO supply comes in a compact box.
What you need
Hiree Guitar Pedal Power Supply 7 DC
A 7-output isolated supply with 9V 100mA outputs and a 9V 300mA output, plus 2 AC outlets and short-circuit protection on each output.
- Outputs: 7
- Isolated outputs
- Max current per output: 100 mA
JOYO Guitar Pedal Power Supply Pedal Board
A 10-output isolated supply with 9V, 12V and 18V outputs, a DC 18V adapter and short-circuit protection with LED indicators.
- Outputs: 10
- Isolated outputs
- Max current per output: 100 mA
- 1-year warranty stated
Voodoo Lab Pedal Power X8 High Current
An 8-output isolated supply with 9V outputs at up to 500mA each, a 12V adapter and a 5-year warranty.
- Isolated outputs
- Max current per output: 500 mA
- 5-year warranty stated
Tavsou Yueyinpu Guitar Pedal Power Supply 10 Isolated
A 10-output isolated supply with 9V, 12V and 18V outputs, short-circuit protection and 10 power cables in the box.
- Isolated outputs
- Max current per output: 100 mA
These come from our ranked list Best Pedal Power Supply, which compares them spec by spec.
Frequently asked questions
Can one power supply run all my pedals?
Yes, if it has enough isolated outputs for your pedals and each output matches the voltage and current the pedal needs. The Hiree supply has 7 outputs, the JOYO and Tavsou supplies have 10 each, and the Voodoo Lab supply has 8.
What voltage do most guitar pedals need?
Most guitar pedals take 9V DC power. The supplies here all feed 9V outputs, and the JOYO and Tavsou supplies also have 12V and 18V outputs for pedals that need a higher voltage.
Do I need isolated outputs?
Isolated outputs give each pedal its own power, so a short in one channel does not stop the others. All four supplies here have isolated outputs, and the Hiree, JOYO and Tavsou supplies add short-circuit protection on each output.
What cables come with these power supplies?
The Voodoo Lab supply includes power cables to connect pedals and a 12V power adapter. The Tavsou supply comes with 10 power cables and 2 polarity reversal cables. The JOYO supply includes a DC 18V power adapter and a DC power cable.
Ranked pedal power supplies lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.