A while back, I looked into the Donner DP-2 after having good luck with some of their other products, and their well-known value for the money. But I'd read questionable things, that it wasn't isolated, and took my chances on another cheap and somewhat similar chinese power brick knockoff. It was average, and I kept it for a while. Just now, I splurged on gear, adding a whole bunch of new stuff, including a few high-end pedals (and even a nice but cheap chinese clone), and then moved everything over to a new pedalboard so I could finally rid my board of dreadful velcro and have it finally looking nice. The last step, was power, and making sure I finally had NO noise introduced by the power supply. I was considering doing things the correct way, but with over a dozen pedals, it was going to cost me quite a bit after already dropping far too much $. So here's what I did: First, I bought 1 high-end/premium power supply [b/c I found a great deal on it] that I knew for a fact was as good as it gets. But I still needed another supply, and didn't want it to stink and basically make the 1st/good one pointless. So I did my best reading through reviews of the scores of PS on amazon and elsewhere, and a few struck me on this one (even w/ also seeing the negative ones). So, I took my chances knowing it could go back if needed. Now, to be clear, I did do an A/B test with this to ensure my power supplies were adequately quiet, and lucky for me, a friend had the same PS as the premium one I'd just bought. So when my Donner arrived, he came over with his power supply too. First, I wired and powered everything up using just those two power supplies to gauge everything, without the donner touching any pedal, and was absolutely blown away at how quiet things were, especially compared to what I was used to w/ my old PS brick knock-off. Just couldn't believe it, things were finally there. Quiet. Almost... too quiet. Then, for the true test, we took my friends PS out completely, and wired up the Donner; so now my PS was being powered by both power supplies - the high-end/premium I'd just bought, and the DP-Z. And the results? Identical. Not just to my/our ears, but according to Audacity, as well. I did, however, make sure to do my best in putting the most appropriate pedals w/ the high end PS (meaning, demanding, digital, and/or known-to-be noisy were powered by that), and the rest, usually lower current analog pedals, went on the Donner (though, worth noting, I have a Purple Moon Fuzz 'n Vibe [it's a fuzz pedal. and a vibe. So it's naturally noisy) and to my surprise, it was loud as hell on the good PS, and went dead quiet when I switched it to the Donner. So... there is that, which to me speaks pretty highly. So, **to those complaining about noise**? I'm not sure. Maybe bad QC and they got a faulty unit? Maybe our chains are just so different, and mine being just about all analog, true bypass pedals helped? Could be a number of other things. Old house/wiring? Direct in to the wall, or using an adapter/strip/surge protector/power conditioner (because these all make a difference); and if on an adapter/strip of any sort, what else is on it? Are amp and pedal supply on the same chain? All this matters (and if you think it could be related to this, many make plug-in conditioners/cleaners/purifiers that many swear by). Or maybe they were measuring noise with certain pedals powered on? Because many pedals are just naturally loud, and even with the guitar volume off, you will still have tons of noise (for instance, plenty of fuzz and dirt pedals, especially once stacked). For those, there's nothing a supply can do. Get a noise gate. In relation to the right pedals being in the right spots, this also relates to the next paragraph (and re-ordering may solve your problem. Could even just be one pedal in the wrong spot causing all this [as my Purple Moon showed]), or, as I've seen BY FAR most commonly, having bad patch cables. [This is one area where you absolutely should NEVER cheap out, they make a huge difference (along w/ length of cable (between pedals, as well as from guitar to board, and from board to amp). Get good cables. If you want a great compromise, I can vouch for "World's Best Cables" being genuinely good (for guitar as well as home theater applications, like ICs, etc). They source good cabling (like Mogami, Cardas, Gotham, etc etc) and great connectors (eminence usually in the case of pedal/patch cables) and just assemble themselves. They're shielded and durable. Not cheap, but not monster/mogami or w/e else prices either and far better than any other junk you'll get to save a buck.] So, I didn't open this up, and therefor cannot confirm if it's truly isolated or not. But from the way it's designed, and its labelling in the back, it does look like it could be... *semi*-isolated (and this is a total guess, but would make sense, and [I think] still allow Donner to accurately advertise it as isolated, because it would be isolated, just not how/what most think when hearing "isolated PS")? By this, I mean something like: outputs 1-4 (each w/ 100mA) are isolated from outputs 5-7 (each @ 300 mA), while #8 (500 mA) is isolated from everything, along w/ #9 (selectable between 12v at 100mA or 9v at 500mA), and #10 (18v 300mA). But even if this is the case, this is adequate for most cases and will work just fine as long as you're using them all appropriately ~~more on this: Essentially, (assuming this is even the case — again, I didn't open it up, it's not stated by Donner, and I'm not an electrician) this just means the first 4 are basically daisy-chained together (but isolated from the rest), and they're all (each) just 100mA outputs. Use these for pedals needing less current, usually analog pedals, & you're fine (and it's basically the same as a single 400mA 9v out for a more demanding pedal). Same goes for #5-8 potentially being chained but higher rated @ 300mA per out, but still isolated from the rest. Then, all the remaining ones, following this logic, are all truly isolated. So any of your more demanding pedals and/or ones that tend to be noisier, give you more issues, and/or are digital, you'd prioritize for use w/ those last 3 (just keeping in mind #10 is 18v [many 9v pedals **will work** just fine @ 18v, though, many even benefit, but CHECK FIRST b/c for others it's harmful. The 9v OCD, for instance, many people, myself included, prefer @ 18v]). In any case, this works great for me, dead quiet, is very versatile, a nice size (though is very lightweight and feels cheap — I can't speak to durability and/or longevity. But at this price, if it performs like this and makes it 2 years I'd be happy), and I'd definitely recommend. Added to a TOL power supply, it didn't degrade my signal chain or sound in ANY way. Many people just confuse noise and/or bad tone with the power supply when it's something else — worst case being old house/bad wiring or having "dirty" power in another sense, best case just being: not using it correctly/wrong pedals utilizing the wrong PS outs; whether or not you're plugging directly into a wall, and if you're not, using a bad power strip and/or what else is on that strip, having pedals that really should have a noise gate and simply will never be quiet no matter what PS you use; and/or blaming tone-suck on either A) having all digital and buffered pedals, or B) having all true-bypass pedals and not adding in a specific buffer in the appropriate place in the chain (this was the biggest fix in tone issues for me. And the two aforementioned power supplies — this Donner being one of them — the biggest fix in my noise issues). Apologies for the book, and there is no TL;DR, but it's an honest review (and I DID NOT get paid for this in any way, didn't receive any products, or receive anything at all in any way [though I wish I did haha]. Just a genuine review w/ something I was impressed w/, since it matched a power supply that's known to be one of the best/quietest, and wanted others to see my experience considering how many other people reviewed this negatively (very similar to the Donner DP-2 reviews, to be honest, and those convinced me to NOT buy the DP-2 however many years ago. Didn't want others being convinced to avoid this, as it's fantastic for a cheap pedal. No noise - just remember, I've only had it for a week, and it is lightweight and in plastic housing, so I can't speak to long-term use). I also wanted to provide possible solutions to those experiencing issues, and offer a possibility of what may be going on as far as being isolated or not (or partly) and how that can be best utilized for best results. If you did read all this (phew), hope I helped in some way. I'm happy with the pedal, and wanted to share the excitement, and possibly help any struggling w/ it. Mostly unrelated (but could lead to an updated review/suggestion): Also just got a Vitoos ISO 4 plus (they're cheapies, too) to power another board, but I'll swap out the Donner with it in my main board just to do another comparison and update my review (is that possible?) just to offer another review, b/c these always get great reviews (well, the Harley Benton one anyway, but I hear they're the same and that many other brands make these [or, I guess one brand makes them, and a handful of others slap their own brand's label on it?]. It's always the Harley Benton that gets recommended as 'best cheap PS," but it's like $30+ to get them shipped to the USA, which is unfortunate b/c the brand, in general, seems to get great reviews for being great for cheap). They're basically MXR clones, super slim/small, which is why I bought it. k, done. promise.

I have 2 pedal boards that both suffered from noise (clicking, humming, and hissing) audible when using the various pedals (Fuzz, Compressor, Looper). I decided to try the Donner DP-Z 9V and was immediately impressed by the fact that the noise is virtually gone - so low as to be insignificant. The 9V outlets are 1 x 500mA, 3 x 300mA, and 4 x 100mA. Additionally, it has 1 x 1,000mA (1A) USB A, 1 x 12V@100mA/9V@500mA (switchable), and 1 x 18V 300mA connectors. It comes with a smorgasbord of cables including a 1 to 3 adapter and 2 short polarity reversal cables (be careful on polarity, the vast majority of pedals use center negative but most non-pedal power supplies are center positive. A lot of modern pedals have reverse-polarity protection but some don't and could be damaged with the wrong polarity). The unit comes with a nice 18V, 2,000mA switched-mode (small, light, and doesn't get hot) mains adapter. When it's plugged in, several LEDs light up aligned with each outlet and they're visible through the translucent top cover (the base part is metal) but these can all be easily turned off by a quick press of a small button above the power input connector; they stay off until the input power is cycled. It also comes with 2 x 9V adapter cables that can be used to power a pedal from a 9V battery, I don't recommend using these to charge 9V batteries (I'm an EE). Overall, it's well made, performs very well with no noticeable noise, and has enough outlets (with cables supplied) to power a large pedal board. I'm very impressed for the money.

Decent power supply with lots of options but definitely not isolated. Depending on which pedals I powered, I got ground hums and whines. Absolutely doesn’t work well with Strymon pedals, unfortunately. Probably good for most analog pedals but be careful if you’re looking to power digital pedals. It’s also a weird shape for attaching to a board.

Durable and performs well, does not cost an arm and a leg. Used professionally, not just in a bedroom.

Click to play video 1st day, but so far this seems like an amazing power supply at an incredible price. I will write a more in depth review as I get more into the technical details of the item. It fits into a Boss BCB-60 Pedalboard with the most minor of modification to the pedal board. It will fit without making a modification, but I found a way to mount it in the board sans velcro and it will not move now, which is why I purchased this unit in the first place. I have to say the measurements were 100% spot on, as it fit exactly like I expected it to. Since I just got this item, I have not thoroughly tested the isolation, but through my amp on the cleanest setting, I do not hear any hiss or noise. I am liking this unit thus far, time will tell but I am optimistic. I plan on making a YT video on how you make it fit like it was designed for this board, but basically use a dremel and cut a 2" slit in the left side of the top indentation on the board, and unscrew the input jack of the board. Slide the Donner PSU into position, then screw the input jack back in and it fits perfectly snug, I can even pick the board up from the PSU and it will not move. Rock on Donner, well done. My only suggestion would be make the variable plug go between 9v and 18v instead of only going up to 12v, the 2 EVH pedals I use (Flanger & Chorus) both need 18v, technically my delay could also use the extra headroom of 18v, but I am using it at 12v from the variable jack and it seems good. Amazing effort by this company.

This didn’t work connected my pedals and the lights just flashed. I had to play with the inputs to the power supply and it worked although with some noise from the pedals. The next time I turned it on the same issue flashing lights no power. I threw it out and bought a Voodoo Labs works amazing, don’t waste your money on this.

I got this power supply for a second pedalboard I’m building. It came complete with all the cables and accessories needed. Built quality is ok, it feels solid in hand, it got a plastic cover, with a metal U shape base. The 10 outputs offer enough versatility and the USB out is a nice addition. It doesn’t seem to add any noise or hum to my signal chain. I compare it with a CS7 I have at home, and they sound the same to my ears. I would have liked it to be a bit thinner to fit under my Nano+, but other than that I consider it a good choice for a budget board.

Muy bien los materiales

Click to play video El producto se siente de buena calidad, tenía 7 pedales y jalaba bien y conecte otro más para un total de 8 pedales y ya no funciona( se supone que soporta 10 pedales) y con 8 ya no jalo bien y me preocupa que pueda descomponer mis pedales, lo que tengo que hacer es desconectar 1 pedal, encender la fuente y de ahí conectar de nuevo el pedal que desconecte y ya funciona, lo cual no debería ser ya que no estoy excediendo los mA requeridos. desconozco si mi unidad este defectuosa o todas sean igual, en cuanto al ruido no tuve problemas. La recomiendo si tienes pensado tener máximo 7 pedales.

I was worried about getting a cheaper power supply like this. I thought I needed a Voodoo Lab power supply to get noiseless operation. The Donner does the job. Its plastic but as long as you are not stepping on it or dropping stuff on it donner will do the job. The power supply has not heated up on me and there is NO static noise or interference. I use it in my home studio and have used it at a few live shows now. The LED lights can be powered off if you like but I like them on. All cables to my pedals, Bass and amp are high quality Planet Waves. I used the included power cables with the power supply and everything is working great. This saved me a ton of money. Highly recommended.

Came as expected , beautifully wrapped as supposed to (all packed in plastic so water nor humidy won't get )all the cables etc. After almost a month of heavy use (30-40 h weekly) I couldn't find why would I pay a $$ for something like Voodo Labs power supply ? -Donner Unit itself is made of some sort of plastic that doesn't seem to be as heavy duty as metal casing. If you are a creative user and open your beers or crack walnuts with this unit it won't be able to handle it. Other ways I just don't see how. It is solid enough for it's use which is resumed to supply a current. Not technician myself but could that plastic play some role from the shielding perspective ? -Works great for prolonged hours, no drops of current, no audible noises could be heard on recordings nor live. I've tested BOSS pedals , Warlus pedals , Electro Harmonix pedals with Donner Power supply and BOSS power supply that is 5x times money asking. And ??? Litteraly no difference I could perceive. Some may argue about the quality of components which will ultimately show the difference. My bet is that a user of higher end gear might have a very different requirements in terms of power supply (500$-600$ per guitar effect ,presuming you have a full pedal board , at least a good 5 pedals ). I use 4 out of 10 power inputs. I wouldn't use more even on some boutique power supply as I would rather plug separately into a grounded , industrial use extension. It powers your pedals, it works just as supposed to, it is silent. Simple device why should it be 350$ ?