I own a pair of powered Bose Monitor-Speakers. The sound quality (for the price!) is very good; however, I have lost the factory power supply in a recent move. I am using ANOTHER 12-volt power supply but the problem is that the speakers are easily over-powered (or perhaps more correctly, easily distorted). This was not a problem with the factory PS (Power Supply). I am also planning on purchasing a Cambridge Audio DacMagic, which also has a poor PS.
Do high-quality PSs exist that I can use to clean-up the sound of the Bose and Cambridge products? I certainly do not mind spending $100 on a good PS versus the $12 units that come from the factory (both the Cambridge and Bose cost me $399).
I have never seen any mention of these online or in any magazine, but I do know that separate PSs are available for turnatables and other audio-accessories (like headphone-amps, DACs, iPod-docks, etc.). I DO plan on upgrading the whole audio system into not only a media-server but a full two-channel sound system (my PC being one of several sources), but not for a year or two (well, one piece at a time every few months).