Donner DP-Z 9V Guitar Pedal Power Supply 10 Isolated DC Output with USB Port for 9V/12V/18V Effect Pedal DC 18v 2000m Input

Great little power supply. Using it now on my peddleboard for about 4 months and no issues. Its compact and have had no noise issues since installing it. Was using a daisy chain before and was getting unwanted noise and faint beeping. This eliminated the issue completely. There are ones that are a lot more expensive out there but this one did the job for me. Makes sure to check the power consumption of all your peddles 1st to make sure you have enough of each type of supply. This bank has 6 x 9v 100mA, 2 x 9v 500mA, 1 x 12v 500mA and 1 x 18v 500mA. A very good selction for this price point. Using the wrong supply for the peddle can cause issues. Appears to be individually isolated and has worked well for me. It is in a nice sturdy metal shell. It was also smaller than I thought it would be, which is an added bonus. Lights up well too and nice to have the feature to turn off the lights if you want. Would recommend

This is a decent power supply for the money. It is aimed mainly at the user who has a large number of relatively low-powered analogue pedals - overdrives, fuzzes, distortions, etc. - and a smaller number of pedals that typically require more current - reverb, chorus, delay, multieffect and so on - plus the ability to power the odd 12V or 18V pedal. All ten outlets are DC only: eight 9V, one 12V, and one 18V. Of the eight 9V outlets, six are limited to 100mA each, and two to 500mA. The 12V and 18V outlets are also 500mA each. All the outlets use the standard 2.1mm plug, centre negative. However you attach the effects, the current drain must not exceed the rated power for the outlet in question. The total power for the whole unit is stated to be 18 watts (18V x 1000mA). All the outlets will accept daisy chains, which can be used safely so long as the total current draw does not exceed the stated rating of the particular outlet. Note that these power ratings are maximums, not optimums. As usual, it's intelligent to avoid placing excessive demands on the power supply, particularly with digital effects. What are the limitations? None of the channels provides the ability to lower the supplied voltage, so 'sagging' the power - for example, to a fuzz - isn't possible. There is no facility to supply AC power, for those pedals that require it: all outlets are DC only. (Most pedals are DC: check before ordering.) Running a positive ground pedal is not possible. The 12V and 18V channels are not switchable, and will supply only those voltages: they can't be used as additional 9V outlets. This is offset by the ability to run a daisychain from one of the 9V channels if necessary. The individual outlets are short-circuit and overload protected, so if one fails it won't bring the whole unit down: but they are not 'isolated' in the true sense (galvanic isolation). If you want complete isolation of each outlet, you will have to pay a lot more. The unit is not intended to cope with pedals that place unusual demands on the power supply, such as: power draw in excess of 500mA; voltages other than those stated; sockets and plugs that are not 2.1mm (without adapters); AC power; or positive ground. This means that if you use - for example - a lot of Strymon, Line 6, or other high-power modulation-type pedals, or boutique copies of unusual old pedals, you would do well to look elsewhere (but if you can afford those, I assume that you wouldn't be looking for a cheap power supply anyway). Otherwise, for the ordinary user at home, or for light gigging, this inexpensive unit should be fine. Just make sure to check your pedals for voltage, current draw and polarity, and don't exceed the maximum power rating for any one channel. The unit has an all-metal case, appears to be decently constructed, and comes with its own 18V AC adapter. All necessary cables are supplied. The bright blue LEDs can be turned off if they are a visual distraction. I'm happy with my purchase.

It is light and compact and provides all the individual power points for all my pedal box. I have an older Dunlop whah pedal which needs 18v; no problem. Isolated outputs are a great idea. All cables needed were supplied. Great value.

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! 😊