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Harley Benton PowerPlant ISO-5 Pro


Multi-Power Adapter for Effect Pedals

  • 5 Isolated, filtered & short-circuit protected outputs eliminate noise and hum
  • High capacity for modern digital effects
  • LED monitoring at each output
  • Connections Output 1 - 3: 9 V DC @ max. 300 mA (individually isolated)
  • Connections Output 4 - 5: 9/12 / 18V DC @ max.500mA (individually isolated)
  • Powered by 12V @ 2A DC power adapter (included)
  • Dimensions (W x D x H): 60 x 110 x 20 mm
  • Weight: 140 g

Note: the total output load may not exceed 18W

Included cables:

  • 5 Pieces 5.5 x 2.1 mm coaxial plug to 5.5 x 2.1 mm coaxial plug - length: 60 cm
Available since August 2019
Item number 463278
Sales Unit 1 piece(s)
DC/AC current DC
Output current in mA 2000 mA
9 V Yes
12 V Yes
18 V Yes
Secondary voltage No
Multi-output power supply Yes
Free of charge with this product
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 Friday, 26.07. and Monday, 29.07.

Compact, high-performance power supply for up to five effects

The Harley Benton PowerPlant ISO-5 Pro power supply unit provides a reliable and affordable way to supply up to five effects units with 9, 12, or 18 volts of power. Its 60 x 110 x 20mm aluminium housing, which weighs just 140 grams, features five isolated, filtered, and short-circuit protected outputs that supply between 9 and 18 volts at a maximum of 500mA - suitable even for those current-hungry digital effects units. Each output also has a green LED to allow its operating state to be visually monitored. This robust and compact unit is supplied with five 60cm DC cables as well as the corresponding power adapter.

Power your effects with 9, 12, or 18 volts

The Harley Benton PowerPlant ISO-5 Pro provides three 9-volt outputs with a constant current of 300mA, while the two remaining ports can be operated at 9, 12, or even 18 volts and up to 500mA - selectable via the two recessed mode switches on the rear side of the housing. This ensures that even digital effects units with high demands in terms of power can be operated without problems. Thanks to the ISO-5 Pro's short-circuit and overvoltage protection as well as the isolation of its individual sections, the effects that are connected can be reliably supplied with power and protected at the same time, in addition to which noise and hum are eliminated. As a result of its extremely compact dimensions, the unit can also be easily mounted beneath your pedalboard and thus do its job completely unseen.

A flexible, compact powerhouse for all kinds of effects

Effects units in varying numbers are, and have long been, an essential part of any musician's setup - regardless of whether they play guitar, bass, or keyboards. The affordable PowerPlant ISO-5 Pro and its five isolated, filtered, and overvoltage-protected outputs reliably supplies the connected effects with up to 18 volts of power at a constant current of 300 to 500mA and also provides a clear and uncomplicated overview.

About Harley Benton

Since 1998, the Harley Benton brand has been catering for the needs of numerous guitarists and bassists. In addition to an extensive range of stringed instruments, Thomann's house brand also offers a wide choice of amplifiers, speakers, effect pedals, and other accessories. In total, the range includes over 1,500 products. Built by established names in the industry, all Harley Benton products combine quality and reliability at attractive and affordable prices. The continuous expansion of the range ensures that Harley Benton always provides new, exciting, and innovative products that keep players perfectly in tune with the musical world, day after day.

Robust aluminium housing for mounting on or under your pedalboard

Thanks to its extremely compact dimensions, the PowerPlant ISO-5 Pro can be easily attached to the underside of most standard pedalboards, thus leaving as much real estate free as possible for your pedals on the top side. The 60cm DC cables included in the scope of delivery should be completely sufficient for most requirements, and they are of such high quality that disturbances in the electricity supply are eliminated right away.

746 Customer ratings

4.7 / 5

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491 Reviews

Does the job!
DrKevGuitar 08.01.2021
The box itself does the job perfectly. No noise, isolated outputs, and my pedals sound great! It's smaller than some of my pedals, which I love. The LEDs are not too bright, which I also love. Looks good too!

My only complaints are the other stuff that comes with it. The 60cm long DC cables are far too long for my needs and are too thick. I think both connectors should be right-angled, the straight one just wastes space. That said, the outputs on the box are very close together and right-angled jacks are a tight fit. I will be making my own cables. The 12V power supply cable needs to be longer and is worryingly thin.

Overall, it's a good package at a great price. If you have high-gain distortion pedals mixed with digital effects, this will get rid of the unpleasant noise digital noise.

I'm sending mine back to exchange for a larger version with more outputs. I realise that best results are when all my digital pedals are on their own output and with only 5 on this unit I've left myself no room for expansion.


Perfect for smaller boards, max 5 pedals!!!
HMMR 28.04.2022
Was referred to this item by the Thomman chat some month ago and I regret not buying it at that time.

The little silver beast is accommodating x5 independent outputs, and more important for my needs, x2 variable outputs for 09V-12V-18V.

This is a perfect extra option even if you are running your rig entirely with 9v pedals.....who knows what your new pedal will be and power needed to run it.

I have not noticed any sounds nor interference for now so that makes me already very pleased. The tidiness of the pedal board now, without the separate adapters from each pedal is a joy, really a space saver

The tiny, really small casing is quite easy to place around your board and the x5 - 60 cm DC cables are suitable and do their job. Great packaging!!!

I bought an extra 75cm DC cable since I needed to plug in a Wah pedal on the opposite side of the board that I like to take out sometimes and need extra length on cabling, but it would have tightly worked with the provided cables, also this wah runs under 18v so another reason for me to buy this item.

The DC cables are indeed a bit hard but do their job correctly and plug in well into pedals.

It might get a bit warm after some extended use but of course that is not a challenge and having in mind the size and purpose, this seems to be normal.

Last but not least, agree again with other previous reviews that the 12v power adapter has a bit of a thin cable but seems it will hold for a while so not worried about that. Also a spare one should not be a big investment should it break

I would say not much more is available with this awesome price and quality.

Time will tell but I am always very confident in Harley Benton - Thomman brands products, amazing stuff for a very affordable price. Always exceeding expectations and positioning itself in line with much more expensive-premium but similar items from other brands selling only that, brand name!

A real winner and there are several larger options since x5 pedals might be a bit small, enough for me and this pedal board w/ multi effect, boost, wah wah, and the main problem arises, which will be the 5th pedal....? I really, really don't need more pedals but we all have this cross we gladly carry I guess. Pedals, Pedals, Pedals, More pedals.....

ATT PURCHASE MANAGEMENT THOMMAN.....If you manage to get some Marshall Guv'nor 2 pedals in stock....I would be among the first to buy one! Really don't need it but hey, let's start thinking about that 5th and last pedal for this board, I still have space for one more pedal to plug to this amazing little power supply!


Great value, although a bit hot.
Dr_Pilsner 26.10.2022
When running a couple of more demanding pedals this unit gets really hot. To the point where I start to worry. I could feel the heat rising through the board and the pedals temperature was around 45-50 degrees Celsius when measured..

Still works though, half a year later. Will update review if it burns out.


Silent unit
Roman.Guitaroman 21.10.2021
This is the heart of my pedalboard. Light and thin block. Three outputs at 9 volts. And two configurable outputs, 9 -12-18 volts. I have pedals running from 12 volts. I was looking for a power supply in a small and low pedalboard. I was fascinated by the size and functionality of the device. I had power supplies and some of them were noisy. Harley Benton ISO-5 Pro turned out to be silent. It is very cool. I bragged to my familiar guitarists and this is the fifth time I've bought the same block for them. The power wires seemed long to me for my pedalboard and I bought shorter ones on Thomann. And long wires will come in handy on a large pedalboard. :)))) I am very happy with the purchase, thank you for the fast delivery and high quality Harley Benton ISO-5 Pro.