Harley Benton PowerPlant ISO-10AC Pro


Multiple Power Supply for Effects Pedals

  • 10 Isolated, filtered and short-circuit-proof outputs eliminate noise and hum
  • High power output for modern digital effects
  • LED display at each output
  • Universal input voltage operation with 100 - 240 V AC switching
  • Output 1 - 4: 9 V DC @ max. 250 mA (individually isolated)
  • Output 5 - 6: 9 V DC @ max. 500 mA (individually isolated)
  • Output 7 - 10: switchable 9/12/18 V DC @ max. 9 V @ 450 mA / 12 V @ 330 mA / 18 V @ 220 mA (individually isolated)
  • USB output: 5 V / 1 A for charging phones and tablets
  • Compact, robust aluminium housing - can be used on or under pedalboards
  • Dimensions (W x D x H): 195 x 88 x 35 mm
  • Weight: 605 g

Note: the total output power must not exceed 55.4 W.Also included in the scope of delivery:10 DC cables 60 cm 5.5 x 2.1 mm straight to angled plugs, 1 USB cable 100 cm, 1 AC power cord, EU plug 1.2 m

available since October 2020
Item number 479580
sales unit 1 piece(s)
DC/AC current AC/DC
9 V Yes
12 V Yes
18 V Yes
Secondary voltage No
Multi-output power supply Yes
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Great value for money
boynamedlen 28.03.2022
I bought this as an upgrade from my OneSpot daisy chain which could only power 5 pedals. I don't play professionally so I didn't want to spend twice as much for something like a Cioks/OneSpot/Strymon. The HB Powerplant line gets mostly very good reviews, apart from a few outliers, so I thought it deserved a chance.

First impressions: nice packaging, the unit itself looked good and all cables are included. One or two dual daisy chains would have been nice but at least you get one cable for every output. Some edges and corners of the brick are a bit rough/sharp so I guess there is a small chance you could cut yourself, but really nothing to worry about.

Connecting everything: the power cables that connect to your pedals are really not very flexible. Maybe this is less of a problem if you have the brick underneath your board, but if not, they tend to get in the way. They are also all the same length, which isn't bad, but it does mean that you have a lot of excess cable for the pedals closer to the brick. I have it secured to the back (not underside) of my board, with the right angle connectors in the brick, pointing away from the board, and the straight connectors in my pedals. It doesn't look great but it keeps most of the cable mess off the board instead of in between the pedals. I guess I could make it tidier with a lot of zip ties, but I tend to swap pedals in and out pretty often. Or maybe I would have less cable mess if I had a small version of Powerplant and a few daisy chain, but for the price I chose to go for the big one.

I don't know how to test if the outputs are isolated as advertised, but I haven't had any noise that really bothered me. I didn't expect it to be the quietest power suppy out there and I don't mind a bit of noise anyway.

There is more power available than I will ever need, and combined with the switchable voltage on some of the outputs, there is a lot of flexibility.

For home use, there is little reason to get anything else. My only real complaint are the stiff cables, but for now I have no need to change them. It would be less of a problem if I have a proper board where I could fit the power supply underneath.

Overall definitely recommended!


Best quality / value
coffeecup 18.09.2021
I like almost everything about it. I couldn't think of a better power supply.

- Dead quiet (If you have noise it's from somewhere else)
- AC outlet is standard computer cable
- 12/18v outs and 500mA outs
- Looks nice
- USB out for charging devices
- power cables have really thick isolation around (can also be a con because they take a lot of space)

- All power cables are the same color. You have to be careful if you use 18v out. You can fry a pedal If you accidentally plug the wrong cable. I labeled the cables with color tape.
- All power cables are the same length. And they are long. You now have a lot of cables tied in loops all around the pedalboard.

4 stars because of the power cables. But I love it overall. The packaging is also nice.


Bang for your buck Power
Kastone 14.03.2022
I was skeptical at first because of the low price, but after using it in gig situations and seeing that It was reliable and trusted it completely.
It’s flexible in case you have pedals that use more than 9V and for the size it has satisfactory outputs. A sturdy construction with a brushed aluminum finish l. The only downsize is the length of the power chord which could have been quite a bit longer.


ax__ 09.02.2022
Slim, sturdy, working great, and having no external power adapter is a great advantage on stage.