How to improve power supply?

Like many other electronic components; regulators generate noise. A number of ways to address that noise have been discussed and tried, by hobbyists and companies. ie: (http://www.edn.com/electronics-blogs/the-practicing-instrumentation-engineer/4422750/Simple-circuits-reduce-regulator-noise-floor) (http://www.diyaudio.com/forums/solid-state/1437-reducing-noise-voltage-regulators.html) (http://www.belleson.com/comparenewclassd.php) (http://www.belleson.com/compareburson.php) (http://www.ti.com/ww/en/analog/tps7a30/index.shtml?DCMP=hpa_pwr_tps7a30&HQS=Other+OT+tps7a30-bt2)

Hi Rod. My biggest efforts have been to remove noise. Equitech balanced power, MIT, Furutech. All to "great" effect. Love that silence.

YES, Mr P: That silence reveals the truth of the saying, "You don't know what you've got, 'til it's gone!"

Mu metal the transformer. Magnetic fields are Bad with a capital B.

Geoff, I don't understand.