PSU-2448Plus+ Power Supply Kit

Finished PSU-2448Plus+ Power Supply Kit

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PSU-2448Plus+ is an improved 4-rail, fully regulated, adjustable and low-noise power supply kit suitable for pro audio DIY projects.

Its low-profile and space-saving design makes this perfect for use in 1u rackmount cases. Additional rectifier capacitors added for ultra-clean DC output.

High quality double-sided, plated-through PC board and components are used. On-board LED indicator lamps for a quick visual reminder if the board is powered up. All power rails are protected by in-line fuses for additional short-circuit protection.

  • The PSU-2448Plus+ features (4) voltage rails, each capable of 1.5Amp (when used with large power transformer that can supply all required power)
  • Low-noise, low-ripple performance
  • Compact size, space saving design
  • V+, V-, and +48V voltage rails fully adjustable, with a Auxilliary fixed voltage rail output
  • Additional in-line fuses for short-circuit protection with LED indicators
  • Easy to assemble, easy to troubleshoot design

The fivefish kits are very high-end, the PCBs are very thick and sturdy, the coating is excellent and very resistant, they look very well done, unlike anything i have ever seen before. - J.Gomez, Analog Recording Forum

I recently purchased a 2448 power supply kit with transformer. I would just like to thank you for making such a nice kit available to the DIY community. It worked out perfect for my project. The quality of the kit was top notch and it was super easy to build. I will be sure to purchase my power supply needs from you in the future. When I have enough cash I hope to try out one of your preamps as well. Thanks again. Brian T. - USA

The circuit boards are TOP-NOTCH.. fully through-plated vias, incredible component layer silkscreen.... I barely even needed to look at the directions... all parts were individually packed and labeled... put together the power supply board in about 1 hour... the preamp boards took about 1.5hours for the first one, and about 1 hour for the second... - forum post on Gearslutz.com

The project was a lot of fun and I must say that your directions and packaging are as close to perfect as anyone can imagine. I know from your web site that you wear a lot of hats (don't we all) but you should consider technical writing as at least a part time job. It's hard to write things like tech manuals and instruction books and you definitely have the knack for it. I sense that Five Fish as a commercial venture is pretty new but with great products and service like this you have every chance of making this a real success. This is my first electronics assembly project but I am certain it will not be my last. I know you are working on a bunch of things and I will want to give another one a try sometime. I would be interested for sure in either building a couple more of these and modifying them with some transformers, or even tackling that API-type design you are working on. Please keep me posted about your emerging products. Again thanks for all of your patience and support. - R.Miller, Music Professor, USA

I am absolutely boggled...everything worked the FIRST TIME! ... there's no extraneous hum or buzz, so I'm calling it a success. One heck of a job on the design, man, I'm digging it! Thanks so much for making these available to us! Finally got around to doing all the transformer and PSU wiring, and doing the smoke test on the preamp. I am absolutely boggled...everything worked the FIRST TIME! ... there's no extraneous hum or buzz, so I'm calling it a success. One heck of a job on the design, man, I'm digging it! Thanks so much for making these available to us! - Scott @ http://www.stillwellaudio.com/

Thank you for the wonderful kit. I have just finished building 1 preamp board and 1 PSU board. Your directions and organization of parts was fantastic. Thanks again for putting together such an easy and fun to build kit. - John S., USA

I just wanted to let you know how impressed I am with your kit, packaging, instructions, and the whole experience. You can't be making much money from the effort and still you managed my transaction as if I were spending $2,000. Congratulations on a great service and on your future efforts. - Lew K., USA

Everything was flawless; didn't even have to look at the build sheet or parts layout, as the PCB is quite good, and all parts are in individual bags and labeled. Anyone with basic soldering skills can put these together. Very clear, and a _lot_ of gain.... for ribbons it is handy. In any event, I just built two, plus the power supply. Everything was flawless; didn't even have to look at the build sheet or parts layout, as the PCB is quite good, and all parts are in individual bags and labeled. Took me about 2 hours to build the first one, and an hour fifteen to build the second one. The power supply was about a half hour ... it is by far the easiest part of the kit to build. Anyone with basic soldering skills can put these together. People seem to have an unnatural fear of making power supplies, but they're really quite simple, and anyone with an iota of common sense can do it. In any event, as to sound, I haven't given the pres a real workout yet, but I've done some minor stuff. I have a hard time coming up with a description of what they "sound" like (e.g. "API-ish," "Neve-ish," whatever) because they don't really "sound" like anything. Very clear, and a _lot_ of gain.... for ribbons it is handy. If anyone has any specific questions I'd be happy to answer; I have no complaints whatsoever, and think these pres are well worth the money. I'm in no way affiliated with Five Fish; I paid for these kits... - C.Randall - Audio Damage, Inc. - http://www.audiodamage.com

I just finished the first of the preamps (and the power supply) and it works on the first try. This is the easiest and most organized kit I have ever built, the instructions are clear and easy to follow and all the time it must take to put all the parts in the labeled bags is well worth it. I just finished the first of the preamps (and the power supply) and it works on the first try. This is the easiest and most organized kit I have ever built, the instructions are clear and easy to follow and all the time it must take to put all the parts in the labeled bags is well worth it. A project like this should require a lot of skills that I am not very good at, but you have organized the kit so well that I had no trouble and everything worked the first time. - J.Walsh - Farview Recording Studios

I've been meaning to let you know how much I appreciate your whole DIY thing. It's a great service to all the DIY audio freaks out there and the PSU's rock. Very nice attention to detail also, which means a lot to me. I'm a furniture maker by trade, so elegance in design is something I notice. I've been meaning to let you know how much I appreciate your whole DIY thing. It's a great service to all the DIY audio freaks out there and the PSU's rock. Very nice attention to detail also, which means a lot to me. I'm a furniture maker by trade, so elegance in design is something I notice. - T.Philp

Success! Awww yeah, this has been a super cool experience, building and learning, and then listening. I gotta give it to FiveFish Studios - the kit is ridiculously well packaged, and the support is spot-on. Mine worked beautifully from the moment I powered it up, too. Success! So I put it in a radio shack project box mainly to see how close I can have the preamp card to the transformer and PS card - the project box is 8" deep, the same depth as the metal rack case that will ultimately be home to four SC-1 pres. This is obviously enough space, as I can't seem to make the thing hum, buzz or otherwise reveal AC/RFI noise. - Trock, USA

I assembled my 2448 power supply this morning. Great instructions!! Easy to do. I have never done through hole soldering before but it just took a little time to get used to. - J.Moen

PSU-2448Plus+ Power Supply Kit

$45 Power Supply Kit
$80 PSU-2448Plus+ Kit + 30VA Power Transformer Kit
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