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!
/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!