How to Power a Pedalboard
Updated Nov 13, 2026 · By 
Jonah Mercer · Editorial policy
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Power a pedalboard with a pedal power supply that gives each pedal its own isolated output. Match the voltage on each output to the voltage your pedals need, and check that each output can supply the current a pedal draws. The 4 power supplies all have isolated outputs, so one faulty pedal does not cut power to the rest.
Count your pedals and check their voltage
Read the label on each pedal for the voltage it needs and the current it draws. The supplies here cover 9V, 12V and 18V outputs between them, so match each pedal to an output with the same voltage. Count your pedals before you buy, so you pick a supply with enough outputs for the pedals on your board.
Pick a supply with enough isolated outputs
Each pedal needs its own output, so pick a supply with at least as many outputs as pedals on your board. Isolated outputs keep each pedal on its own circuit, so a short on one output does not affect the others. The supplies here have 7, 8 or 10 outputs.
Connect each pedal with its own cable
Plug a DC cable from one output on the supply into the power jack on one pedal, and give each pedal its own cable and output. Do not share one output between pedals, since one output can only feed the pedal plugged into it. Route the cables under the board so they do not pull on the jacks.
Plug in the supply and check each pedal
Plug the supply into a wall outlet and switch it on. Check that each pedal lights up and passes sound, and look for the short-circuit indicator on supplies that have one. If a pedal stays dark, check its cable and output before you try another cable.
Mount the supply under the board
Set the supply under the board or beside it, where air can move around it and you can reach its switch. Keep the AC cord clear of the pedal jacks. The Voodoo Lab supply is built for mounting below a low-profile board, and it comes with Dual Lock for mounting.
What you need
Hiree Guitar Pedal Power Supply 7 DC
A 7-output supply with isolated 9V outputs and 2 AC outlets, plus 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 supply with isolated 9V, 12V and 18V outputs, short-circuit protection on each circuit and a DC 18V power adapter in the box.
- Outputs: 10
- Isolated outputs
- Max current per output: 100 mA
- 1-year warranty stated
Voodoo Lab Pedal Power X8 High Current
An 8-output supply with isolated 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 supply with isolated 9V, 12V and 18V outputs, short-circuit protection on each output and 10 power cables in the package.
- 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 output power more than one pedal?
No. Give each pedal its own output, since the supplies here are built to feed one pedal per output. Sharing an output can starve a pedal of current and add noise to the pedals on it.
What voltage do my pedals need?
Read the label on each pedal for the voltage it needs. The supplies here offer 9V, 12V and 18V outputs, so match each pedal to an output with the same voltage. Never plug a pedal into an output with a higher voltage than its label states.
Do I need a separate adapter for each pedal?
A pedal power supply runs all your pedals from one plug, with one output per pedal. Each output gives DC power to one pedal, so you do not need a wall adapter for each pedal.
Ranked pedal power supplies lists
More how-to guides
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