Over the past year or so I have become a big believer in getting the cleanest possible AC to my components. I live in an apartment and so all the A/V gear share two outlets. To add insult to injury I have decided to use a PC as my main transport and part-time gaming console. So I have a bunch of switching power supplies and the computer.
So as a step to minimize the amount of potential noise being circulated in my AC, I decided to build the AMB Sigma 11. It's a single rail linear regulated power supply kit, most often used to power headphone amps, etc. at head-fi.org, but it can be used to replace any wall-wart. Voltage is flexible, from 5v up to 36v, and the current limit is 8A - but this can increased or decreased by your choice of components, and of course your transformer. Amb.org has detailed instructions.
http://www.amb.org/audio/sigma11/"σ11 ("sigma 11") is a high-performance DIY single-rail linear regulated power supply (PSU). It is basically half the σ22 dual-rail PSU, and possesses the same low-noise, high-current, excellent line/load regulation, wide-bandwidth, and stability characteristics. σ11 is ideal for DIY stereo headphone amplifiers, preamplifiers, DACs, network media players, and other applications requiring a single-rail regulated PSU. The circuit uses all discrete components (no integrated circuits), and features high-current MOSFETs as the output "pass" devices. "The big plus for this PS is that it can power up to 4 devices. So I have it set to 12v and will use it to power my Terakink X2 SPDIF converter, my WDTV, the fan in my DCB1/CDA-254 integrated amp, and potentially my external hard drive. So all those cheap switching supplies can get tossed, and more outlets freed up from my power conditioner and power strip...
I had every intention to document the build and even reminded myself as I got the components together, but next thing I knew an hour went by and it was mostly done! That's not a good sign! I solder sling now like an old lady knitting in front of the telly!
Anyhoos, I got the board itself soldered in about an hour and I took my time. There are only a dozen components. It's a very, very simple build. The hardest part was (and will always be for me) doing the enclosure. I just used an old Radio Shack project box I had lying around. The transformer is an Antek 15v.
I only have one connector so far, I'll add the other 3 when the parts get in. I tested it on the Teralink last night and it works great. because of all the crazy diy AC stuff I have I will give it a couple days to burn in/adjust. But it's worth it just be able to free up more outlets and reduce the cords.
And yes, it can power a B1.
Cost is around $75 inc. RS enclosure and transformer. Not bad considering the only retail version is ~$300 and most audiphile linear PS start at about that price.
