Dedicated mains supply unexpected result

Thank you for the responses, I have not replied untill now  so I had a chance to carry out some of the suggestions from posts to the thread (some of which seem to have disappeared?) and get the electrican back.

Anyway cleaned all the connections with contact cleaner, checked tightness of connections and the electrician checked continuity and impedence. Also the dedicated circuit is  now directly connected to the incoming mains supply. Ran the system for a couple of days and things did improve.

As a final possible improvement I replaced the house main fuse (the end caps were quite tarnished) and cleaned the fuse container/contacts. This seems to have brought about a noticable improvement over the original sound quality.

I don’t think it is my imagineation but some often played tracks have greater clarity and tighter bass.

Good to hear! It took my system couple of weeks to settle after the dedicated circuit was run. Cable break in and ears/brain getting used to new sound.

👍thanks

It is not your imagination. My system sounded bolder and more pronounced, after I ran a dedicated 20 amp CCT

Aluminum is for cans! Copper is for electrical wire and pennies.

Not so, they are using aluminum cables for distribution lines and connections from the street to the houses, at least where I live in BC. And there isn’t much copper in pennies these days, in the US anyway, we don't even have them in Canada.