Pricing and availability

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Sweetwater
3.0 (3)
$92.40
Guitar Center
4.5 (2)
$92.40
Amazon
5.0 (5)
Used
Reverb
5.0 (5)
$88.00 New
$85.67 Used
Musician's Friend
5.0 (1)
$92.40
B&H
5.0 (1)
$92.40

Price History

Based on price data from 4 merchants for "Electro-Harmonix S8 Multi-Output Power Supply". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Transform your pedalboard into a powerhouse of consistent, noise-free performance with the Electro-Harmonix S8 Multi-Output Power Supply. Designed for the discerning musician, this power supply ensures each of your pedals receives optimal current, eliminating unwanted hum and interference. With eight individual outputs, the S8 can handle even the most demanding effects setups, making it an essential tool for both studio and stage.

The Electro-Harmonix S8 is engineered to keep your signal chain pristine. Seven outputs provide 9V DC at 250mA, ideal for most standard pedals, while the eighth output offers 18V DC at 150mA, perfect for those higher-voltage needs. This versatile setup guarantees that every pedal in your arsenal performs at its peak, giving you the freedom to focus on your music, not your power supply.

Key Features:

  • 8 isolated outputs for noise-free operation
  • 7 outputs at 9V DC, 250mA
  • 1 output at 18V DC, 150mA
  • Compact and durable design
  • Includes a limited 1-year manufacturer warranty

Product specs

Brand Electro-Harmonix
Model S8 Multi-Output Power Supply
Finish Black
Year 2019 - 2025
Categories Pedalboards and Power Supplies
Pedal Format Mini

FAQs

How many pedals can the Electro-Harmonix S8 power simultaneously?

The Electro-Harmonix S8 Multi-Output Power Supply can power up to eight pedals simultaneously, with seven 9V outputs and one 18V output.

Is the Electro-Harmonix S8 compatible with both 9V and 18V pedals?

Yes, the S8 provides seven 9V outputs and one 18V output, making it compatible with both 9V and 18V pedals.

Can the Electro-Harmonix S8 fit under most pedalboards?

The Electro-Harmonix S8 features a compact design that allows it to fit neatly under most pedalboards, making it a convenient choice for various setups.

Does the Electro-Harmonix S8 provide isolated outputs for pedals?

The Electro-Harmonix S8 offers isolated outputs, helping to minimize noise and interference when powering multiple pedals.

What type of power input does the Electro-Harmonix S8 require?

The Electro-Harmonix S8 requires a standard AC power input, which is typically included with the unit for easy setup and use.

Reviews

PROS

  • Eliminates noise compared to daisy-chained setups

  • Compact design fits well on medium-sized pedalboards

  • Includes multiple 9V outlets and a powerful 18V output

  • High-quality construction and reliable performance

  • Attractive design with purple LEDs enhances board aesthetics

  • Solves high frequency whine issues with certain pedals

CONS

  • Cannot accommodate specific Electro Harmonix pedals requiring 9.6V

  • Unclear if it can be mounted under a pedalboard

  • Lacks some advanced features found in higher-priced models

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix S8 Multi-Output Power Supply.

Features and functionality

  • The Electro-Harmonix S8 is praised for its quiet operation and robust build, making it suitable for powering multiple pedals without introducing noise.

    Source
  • EHX pedals like the Canyon and Pico Pitchfork can exhibit signal issues when daisy-chained, suggesting cross voltage or resistance issues rather than voltage discrepancies.

    Source

Use cases and applications

  • The EHX S8 is specifically used for powering all pedals in setups, as opposed to other power conditioners which are more suited for studio rack gear.

    Source

Comparisons

  • The EHX S8 is noted for its quiet performance compared to cheaper daisy-chained power solutions, which can be sufficient for 9v pedals but might introduce noise issues.

    Source
  • Owners report the EHX MEL9 has compatibility issues with the Strymon Ojai, but works well with Truetone and Cioks power supplies.

    Source

User experience

  • Owners appreciate the reliability of the EHX S8, mentioning it's well-built and effectively handles various pedal power requirements without deterioration of pedal performance.

    Source

Software and compatibility

  • EHX Good Vibes pedals may experience crackling and volume drops with some power supplies, such as the CIOKS 7, but work fine with the factory power supply.

    Source
  • The EHX Oceans 12 can have power issues with ISO power buses, causing blinking and power cuts, but works reliably with its proprietary power supply.

    Source

Critic Reviews

EHX unveils an eight-output power supply, the S8

guitar.com

The Electro-Harmonix S8 Multi-Output Power Supply delivers versatility with its eight outputs, including seven 9V and one 18V, each well-regulated to reduce noise. Its compact design and sturdy metal chassis make it road-ready, all at an appealing price of $79.99. However, potential buyers should beware: the power outputs share a ground, meaning it lacks true isolation, which could lead to noise issues for certain pedals. This could be a dealbreaker for those needing complete isolation. Overall, the S8 is a solid choice for many, but its limitations might deter some serious pedal enthusiasts.

Electro-Harmonix Launches S8 Universal Pedal Power - Premier Guitar

premierguitar.com

The Electro-Harmonix S8 Multi-Output Power Supply strikes a chord with its ability to power up to eight pedals efficiently, featuring individually regulated outputs that minimize noise and maintain pedalboard aesthetics. Its compact, rugged design makes it ideal for gigging musicians. However, the S8 isn’t without its drawbacks; it lacks compatibility with certain pedals that require isolated power, which could limit its usability for some players. Despite this, its reliable performance and reasonable price tag make it a compelling choice for pedal enthusiasts looking to streamline their setup.

positive

Power up with Electro-Harmonix's new S8 Multi-Output power supply | Guitar World

guitarworld.com

The Electro-Harmonix S8 Multi-Output Power Supply is a robust and versatile option for guitarists, boasting eight outputs—one 18V and seven 9V—each individually regulated and short-circuit protected. Its compact metal chassis is both lightweight and durable, making it an excellent choice for pedalboard setups. However, while it delivers solid performance at a price point of $79.99, the lack of additional features such as isolated outputs may leave some users wanting more. Overall, it stands out in the crowded power supply market, offering great value for those looking to power multiple pedals effectively.

positive

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Artist usage

Add artist
See how Cameron Picton uses Electro-Harmonix S8 Multi-Output Power Supply

Cameron Picton

Singer, Guitarist

Black Midi

...
Verified via Photo

Cameron can be seen using this powersupply on his guitar pedalboard on the 2023 US/Canada Black Midi tour (Credits to u/ACE_PIXEL)

Used With

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