USB power supply?

Balanced power is a good route for power conditioning. As for power supply, there are some military grade ones if one care to look in test equipments on fleabay. Having worked at Hewlett Packard Medical Systems, I know there are some vintage but excellent power supply unit that perform much better than they look. I have mine modded and it works much better than the commercial ones I have bought and sold. The improvement is sound is enormous!

/Steve of Empirical Audio: arent you abusing this forum as self promoting and advertising platform? Shame on you, I will never buy anything from your shop!

Audioengr: there is a difference between giving advice and straight-into-your-face advertising that you are practicing here. You are the ONLY one on Audiogon being that obnoxious. One only has to look at your answer thread that looks like a continuum of your ads. If you are a bit smarter, you could have given a hint to your product or, better, something that leads to it but no, you have to rub it in our face like a used car salesman. Have you ever seen a positive reaction to any of your ads? Caveat Emptor!

Who are you Paul? Steve's employee or friend? I see some owners of shops posting but none as much and as BLATANT like him trying to sell his stuff. Why can't he pay the members fee as industrial participant and post as many listing as he wants? If you haven't noticed, there is a difference between forum and ad listings.