N-audio Electronics
Handcrafted Boutique Guitar Effects

Powerbox Mk2 - stompbox power supply

Powerbox  Mk2 - stompbox 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 Mk2 is what you need!

   N-audio Powerbox Mk2 is a power supply for effect pedals. Unlike most of the cheap adapters this power supply unit is based on a high-quality transformer with a reduced flux density to reduce noise and gives you 5 independent galvanically isolated output groups. Each group can supply two effects pedals (10 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 Mk2 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 18 or 24 VDC guitar effects or effects with centre positive supply, for instance, fuzz faces, germanium boosters, tycobrahe octavia style octavers and others.

Powerbox Mk2 pedalboard power supply for effect features:
werbox Mk2 Icon

9/12 VDC Outputs 1-4
These outputs can deliver up to 520mA current per group. They are ideally for high current pedals like multi-effect processors, programmable loopers or delays like Strymon, Eventyde, TC electronics, Line6 and many more. Works great with any low power effects too.

9/15/18/24 VDC Outputs 5-6
These outputs are ideally for some 24 volt Electro-Harmonics effects, 18 volt boosters/overdrive pedals like Cmat mods Browne. Can power 15 volt Radial Tonebone effects and also high current 9 VDC effects like Strymon, Eventyde, TC electronics, Line6 and many more. Works great with any low power effects too.

Ultra low noise 9.5 VDC  Outputs 7-10
These ultra-low noise outputs simulate 9V alkaline battery and can deliver up to 100mA per group. They have 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.

What's in the box:
Powerbox Мк2 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 a 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: 11х5х9cm
  • Weight: 1Kg
  • Output voltages: 9, 12, 15, 18, 24 VDC
  • Five galvanically isolated groups
  • Outputs: 10 outputs ø5.5/ø2.1mm centre negative
  • Operation indications: 5 control LEDs
  • Mains supply: 230/240VAC or 100/110VAC
  • Mains transformers: 50/60Hz transformers with reduced flux density
  • Protections: mains fuse, short circuit protected outputs
  • Designed and handcrafted in Europe
  • Built to last a lifetime
  • Warranty: 5 years

Outputs voltage and maximum current consumption:
Powerbox Mk2 Current capabilites

Powerbox Mk2 mains switch

Powerbox comes with fixed mains supply 115 or 230VAC, but we can add a voltage selector: 115-230VAC, placed on the bottom of the supply on request.

Usually, we ship our Powerbox Mk2 within 1-2 days.
The time for delivery to Europe is 4-10 days, 2-4 weeks for worldwide delivery via post /registered priority mail/.

We accept almost any type of payment: Bank transfer, MoneyGram, Western Union etc. Also, you can buy directly from our site via PayPal, but if you like to choose your preferred payment method, please contact us. We will try to comply with your request.

(incl. shipping to)