Harley Benton PowerPlant ISO-1AC Pro Modular


Multiple Output Modular Power Supply

  • 5 Isolated, filtered and short-circuit protected outputs for the elimination of noise and hum
  • High-current output for modern digital effects
  • LED display on each output
  • Universal input voltage operation with 100 - 240 V AC circuit
  • Outputs 1 - 5: 9 V DC @ max. 500 mA (individually isolated)
  • Main AC output enables the connection of two or more devices via a Kettle female-to-male connector (included)
  • Compact, robust aluminium housing - Can be used on or underneath pedalboards
  • Dimensions (W x D x H): 130 x 88 x 35 mm
  • Weight: 400 g

Note: Total output power must not exceed 22.5 W.


  • 5x DC cables: 60 cm, 5.5 x 2.1 mm, straight-on-angled connector
  • 1 AC power cable: EU plug, 1.2 m
  • 1 Kettle connector-to-plug (female-to-male)
Available since October 2020
Item number 479621
Sales Unit 1 piece(s)
DC/AC current DC
9 V Yes
12 V No
18 V No
Secondary voltage No
Multi-output power supply Yes
Including VAT; Excluding £10 shipping
In stock
In stock

This product is in stock and can be shipped immediately.

Standard Delivery Times
Delivery approx. between Monday, 4.03. and Tuesday, 5.03.

188 Customer ratings

4.9 / 5

You have to be logged in to rate products.

Note: To prevent ratings from being based on hearsay, smattering or surreptitious advertising we only allow ratings from real users on our website, who have bought the equipment from us.

After logging in you will also find all items you can rate under rate products in the customer centre.


143 Reviews

Just buy it
MD25 06.01.2022
I have bought a lot of guitar stuff. From flashy reverbs and delays to OD's, Phasers, wah's you name it. But this thing is one of those things that are just so good and affordable, that I get a big smile on my face whenever I see or think of it. It's silent, has an insane amount of juice, modular (which is a very important aspect since I bought three of these and an ISO-2AC Pro Modulars to power 20 pedals) and it's build like a tank. Also it's a switchmode power supply so you can use it anywhere. You don't get any spare cables but the ones they included feel solid enough to last a very long time. The plugs are also a relatively small form factor. All in all, just get this. Even if you only have 1 pedal. Get rid of wall warts and daisy chains. This is the way to go.


Great pedal power
TobiasFEsq 08.09.2022
This provides enough power for modern, high end pedals. And they're all isolated. 500Ma is easily enough to daisy chain more units if required, and if you choose the right pedals to do this with, won't interfere with the sound quality (and of course you buy the extension unit for a few pounds if you want all isolated).

The unit is solid, well made and silent - no interference in my chain. You can plug it directly in to a UK socket with a standard UK IEC kettle lead. And of course you take it all over the world without difficulty. This is a third of the price of any serious competition. It also looks good. Top notch.

Two minor points: 1) normally Thomann throw in an English kettle lead for EU plugged items coming to England - this time they did not. But they are common leads and I had a spare. 2) If you use velcro/onboard fasteners then it's great but if you don't, no rubber feet are provided.


Pleasantly surprised!
Madchiotis 04.03.2022
Bought this as my first multiple power supply to replace my pedals’ individual supplies. Feels rock solid, the “juice” is more than enough for my needs and its design is incredibly compact and practical. The ability to chain more units makes this unit potentially future-proof. Couldn’t be happier!


Great modular power supply with a minor caveat
forkless 06.05.2023
This extremely affordable power supply makes scaling up a pedalboard a breeze and will power most of your pedals without issue.