Donner Power Supply, Guitar Pedal Power Supply 10 Isolated DC Output for 9V/12V/18V Effect Pedals (DP-1)

This is a fantastic power supply for the price point. It is robust and reliable and it won't be too long before it has paid for itself as you will never need a 9 volt battery again. Plus your conscious can be that little bit clearer as you are no longer using batteries which are more harmful to the environment. It has powers for 9v 12v or 18v pedals which is a nice feature at this price point. The unit also comes with 10 power cables to get you jamming straight away! I used my multi-meter to test for isolation. Each individual power outputs are not individually fully isolated which I understand the DP-4 is, however there is little hum when using this power supply. Make sure that you plug the DP-1 into the same extension cable as your amp for best results. At this price point, it is hard not to recommend this power supply! For the bedroom guitarist this would be more than good enough, and it will also be decent for gigging guitarists who don't have a big and complex pedalboard / or even just have in the gig bag as a backup.

As a beginner in the world of pedals, I've always found having to have an extension lead for several pedals incredibly inconvenient. I've tried a multitude of different electric plugs with different ends and they've all been very unreliable and thus unsuitable for a live scenario. So after much frustration I went to search for a power supply. In my mind, they'd always been prohibitly expensive putting it out of the price range of an amateur musician. When I found this for such a low price, I was initially quite hesitant but after playing with it for the past few weeks, its played perfectly with no issues whatsoever. There's nearly no unwanted noise coming from the power supply, even when running through some pedals running on battery power and some plugged in, all of different makes. With ten outputs, I can put all of my pedals on at once with no issue. It's small size let's it fit into any pedal board with ease. You can even charge your phone from it (perfect if you use an app on your phone for tuning)! Overall, I cannot recommend this power supply enough, don't let the low price put you off getting it, it's well worth every penny!

I rarely leave reviews, but this Donner power supply is very impressive, especially in terms of noise reduction. As a guitar player of 25+ years, I never really took to guitar pedals and preferred simply the plug and play method. Recently, however, I have felt the need for a looper pedal, as I have seen the amazing results that can be achieved with them, and indeed Donner's own Circle looper pedal is a wonderful piece of kit. I decided to keep adding to my rig, until I was satisfied that I had all of the tones I could ever wish for, and the results at first were........ Disappointing. Very disappointing in fact! I got nothing but noise and feedback, especially using distortion or fuzz (I was using a daisy chain power adaptor direct from the plug, which is what I thought was the done thing). Then I discovered these stand alone power units and purchased one, in the hope that it would solve my noise problem. It did! And it did it superbly well! Plug it in, plug in your pedals and off you go. I now have a pedal board with 8 pedals, limitless tonal possibilities and find myself playing a LOT more than I was. Most of my pedals are so called 'budget' pedals, but to me, there's nothing budget about the way they sound, which is ultimately what I consider the most important thing. Sits right underneath my Donner pedal board too and the cool blue LED is a very nice touch. Highly recommended! 😊

This not an isolated supply. To a point this worked well but start filling up the sockets and the system noise gets too much. This is a basic DC supply, though for £20, that shouldn’t be a surprise.

2nd time, I have bought this power supply. 1st one is still going strong since Covid. The latest power supply the Power cable seems about have the size of the original length when compared, using for a small travel board.