A power supply, or AC adapter, converts 240V mains power into the low-voltage DC that guitar pedals and effects units run on, matched to the device's voltage and polarity.
A power supply, or AC adapter, converts 240V mains power into the low-voltage DC that guitar pedals and effects units run on, matched to the device's voltage and polarity.
About Power Supplies & AC Adapters
Guitar pedals, audio interfaces and outboard effects units often need a specific external power supply. An AC adapter (plug pack) converts 240V mains power into the low-voltage DC power these devices run on, and using the correct voltage, current rating and polarity keeps your gear safe and noise-free.
The range covers fixed and variable voltage AC/DC adapters, popular 12V power supplies for audio and video equipment, and Powermaster power supplies. Guitarists running multiple pedals should see our dedicated guitar pedal power supplies, including multi-output units that mount neatly under a pedal board. For mains leads and kettle cords, browse power cables.
Match the voltage marked on the device exactly, pick a supply with an equal or higher current (amp or milliamp) rating, and confirm the plug size and polarity. Most guitar pedals, for example, use 9V DC with a centre-negative plug.
Most plug-pack power adapters take 240V AC from the wall and output low-voltage DC, which suits the vast majority of pedals and small audio devices. A small number of devices need an AC output adapter, so always check the specification before swapping supplies.
Yes. A device only draws the current it needs, so a higher-rated supply runs cooler and safer. Never use a higher voltage than specified, as that is what damages equipment.