MXR M238 Iso-Brick Power Supply

Guitar FX

Guitar FX (effects) refer to the wide range of pedals and processors that shape and manipulate a guitar’s signal to create different sounds. From classic distortion and overdrive to reverb, delay, modulation, and pitch-shifting, effects are at the heart of a guitarist’s creative toolkit. Whether analogue or digital, stompbox or multi-effects unit, Guitar FX allow players to express mood, texture, and dynamics in unique ways. Used thoughtfully, they can transform a simple riff into something atmospheric, aggressive, or entirely otherworldly.

supply

A power supply for pedals is a device that provides stable, isolated electrical power to multiple effects pedals at once. Instead of using individual batteries or wall adapters, a good power supply ensures each pedal gets the correct voltage and current, reducing noise and hum.

Many pedal power supplies come with multiple outputs—some isolated to prevent ground loops—and can handle different voltage requirements (like 9V, 12V, or even 18V). Using a reliable power supply keeps your pedalboard neat, efficient, and your tone clean and consistent during rehearsals and gigs.

About MXR

We have new and used MXR musical equipment available on our website for fast direct delivery from sellers across the UK & Europe.

MXR, short for “Mixing,” is a well-respected manufacturer of guitar pedals and audio effects units known for their reliability, innovation, and iconic sound. Established in the 1970s, MXR has been a staple in the pedalboard setups of countless musicians across various genres, from rock and blues to metal and beyond. Renowned for classics like the Phase 90, Dyna Comp compressor, and Carbon Copy delay, MXR pedals offer a wide range of effects to help guitarists shape and enhance their tone. With a commitment to quality construction and timeless designs, MXR continues to push the boundaries of what’s possible in effects pedals, providing musicians with the tools they need to unleash their creativity and express their unique sonic identities.

MXR M239 ISO Brick Mini Power Supply

£114.99 £103.84

Input 18V: At 2 Amps regulated supply (positive barrel negative centre 5.5mm x 2.1mm plug) Number of items: 1.0 Model Number: M239 Package Weight: 0.612 kilograms

Jim Dunlop MXR DC Brick

£99.00

Eight 9v outputs

MXR M238 Iso-Brick Effects Pedal Power Supply 9V,18V Outputs Plus Two Variable 6V-15V with Tonebird Bundle With Dunlop 18V Power Adapter, True Tune Tuner, Multi-Tool, Patch Cables and Dunlop Picks

£364.14

Light and pedalboard-friendly with 10 fully isolated outputs ranging from 9V to 18V—including two variable 6V–15V outputs Special noise-reduction circuitry for quiet operation Two 9V outputs at 100mA, two 9V outputs at 300mA, two 9V outputs at 450mA, two 18V outputs at 250mA Two variable outputs adjustable from 6V to 15V at 250mA. The two variable … read more

MXR Iso-Brick Pro Power Supply (M242)

£320.25

Delivers clean, constant tensions for a variety of pedal types Slim form factor fits under most popular pedalboards – brackets and screws included Operate everything from analog low current pedals to high current multi-fx units 10 total outputs, each fully isolated to reduce line noise: four fixed 9V DC@300mA outputs, two fixed 9V DC@500mA outputs,… read more

The Original Premium ‘Nordell Audio’ Isolated 10 Output Power Supply Unit for Guitar Effects/Pedal Boards (9/12/18v)

£39.97

✅ Powers up to 10 pedals, with each output isolated – if one output fails, the others are unaffected ✅ Blue LEDs can be optionally switched on to light your pedalboard, or indicate any short circuits ✅ Includes 10 x DC Power Cables and 2 x polarity swtiching cables (to make centre positive) ✅ Outputs 1-7: 9v DC, max 100mA // Output 8: 9v DC, max 50… read more