How to improve power supply?

My pre has a separate ps and it's very inadaquate.
It's from the mid 90's. What are the most important parts upgrades since then?

ptss09-16-2014 6:17pm

ptss OP Details Discussions Posts This discussion Message User 1,964 posts 09-22-2014 at 01:22am Copy Comment URL Report Comment Edit Delete Geoff, I don't understand.
geoffkait Details Discussions Posts This discussion 23,365 posts 09-22-2014 at 02:54pm Copy Comment URL Report Comment Edit Delete Ptss, the magnetic fields, the induced magnetic fields produced by the transformer are bad for the sound and extend all around the transformer. Doesn't it make sense to get rid of these stray magnetic fields for once and for all?
ptss OP Details Discussions Posts This discussion Message User 1,964 posts 09-24-2014 at 04:27pm Copy Comment URL Report Comment Edit Delete Geoff, I understand and agree with the goal of eliminating stray magnetic fields; but I don't understand 'how' to do it.
ptss OP Details Discussions Posts This discussion Message User 1,964 posts 09-24-2014 at 05:53pm Copy Comment URL Report Comment Edit Delete How should I "Mu metal the transformer"?
kijanki Details Discussions Posts This discussion Message User 4,428 posts 09-24-2014 at 05:53pm Copy Comment URL Report Comment Edit Delete Use toroidal transformers - very small magnetic field outside.