N-Audio Powerbox PRO - Precision Power Supply with 7 Isolated Group



Powerbox PRO guitar effects power supply

You have too many effect pedals? And too many supply adapters for your guitar or bass effects which take up too much space and are nothing but trouble with currents and make a lot of noise? Are you looking for a convenient solution? You want your flexible guitar effects power supply to be quiet, stable, isolated and filtered, with individually separated power outputs, different output voltage options and with no ground-loop issues! You want to power your whole pedalboard with just one cable plugged directly into the socket and to be able to power on all of your effect pedals quickly? Then the new swiss army knife guitar effects power supply Powerbox PRO is what you need!

N-audio Powerbox PRO is a power supply for effect pedals. It is based on our bestseller Powerbox Mk2 but the PRO version has two more isolated high current switchable AC/DC output groups. Unlike most of the cheap adapters this power supply unit is based on a high quality transformers with a reduced flux density to reduce noise and gives you 7 independent galvanically isolated output groups. Each group can supply two effects pedals (14 pedals in total). The output voltage of most output groups can be changed via DIP switches at the top of the unit. All DC outputs are short circuit protected.  Due to the galvanically isolated groups, Powerbox PRO power supply for effect pedals guarantees a significant decrease of noise and ground loop problems. Additionally, thanks to the galvanic isolation, you can use it for supplying pedals that require AC effects, 18 or 24VDC guitar effects or effects with center positive supply, for instance fuzz faces, germanium boosters, tycobrahe octavia style octavers and others.

Powerbox PRO pedalboard power supply for effect features: 

9VAC/9VDC/12VDC Outputs 1-4

Four high current AC or DC outputs. Each of these outputs can deliver maximum 1500mA for AC effects like a Digitech Whammy, JamMan, Line6 pedals, ISP Theta and many more 9VAC effects. Can be used also as a high current DC supply for your Strymon, Eventyde, TC electronics, Line6 etc. Works great with any low power effects too.

9/12VDC Outputs 5-8

These outputs can deliver up to 520mA current per group. They are idealy for high current pedals like delays, multi effect pedals or programmable loopers like Strymon, Eventyde, TC electronics, Line6 and many more. Works great with any low power effects too.

9/15/18/24VDC Outputs 9-10

These outputs are ideally for some 24VDC Electro-Harmonics effects, 18VDC boosters/overdrive pedals like Cmat mods Browne. Can power 15VDC Radial Tonebone effects and also high current 9VDC effects like Strymon, Eventyde, TC electronics, Line6 and many more. Works great with any low power effects too.

Ultra low noise 9.5VDC  Outputs 11-4

These ultra low noise outputs simulates 9V alkaline battery and can deliver up to 100mA per group. They has less than 130dB noise at 5mA current consumption. They are ideal for any sensitive low power analog pedal like wah pedal, overdrive pedal, booster, distortion, compressor etc.

Included cables:

Powerbox PRO is available in a kit of all necessary cables for powering effects, which content:

  • Standard IEC power cord with EU, UK or US plug (Australian plug not available)
  • Eight standard black cables with a diameter of ø5.5/ø2.1mm and  length of 50cm
  • Two (red and blue) cables with diameter of ø5.5/ø2.5mm and length of 35cm
  • One black cable with 3.5mm mono jack output and length of 35cm
  • Three reverse polarity cables with a length of 15cm
  • One current doubler Y parallel cable


  • Dimensions: 19х5х9cm
  • Weight: 1.8Kg
  • Mains supply: 230/240VAC or 100/110VAC
  • Mains transformers: 50/60Hz transformers with reduced flux density
  • PCB: double sided gold plated PCB
  • Protections: mains fuse, short circuit protected outputs
  • Fuse: 20x5mm fuse. 500mA fuse at 220VAC or 800mA fuse at 110VAC mains
  • Outputs: 14 outputs ø5.5/ø2.1mm center negative
  • Operation indications: 7 control LEDs
  • Handcrafted in Europe
  • Warranty: 5 years

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