Re: mains conditioner.
Good morning, there are various types of main conditioning, many regard Russ Andrews as being the leading man in the UK on this work.
www.russandrews.com
The cheapest start to it is buying a Tacima 6 plug extension (£24) which many of us use.
I also use Kimberkord Classic mains cables on all my system. (bought over the years)
Then recently (as I have posted on here) I discovered a bargain off EBay - BT Mains Conditioning Units.
They make a few models housing 125VA to 500VA transformers along with Mains capacitors for smoothing. They have from 1 to 3 13Amp sockets.
They can be picked up for around £45ish when there is one about.
They make an substantial difference even on top of what I have already done.
Unfortunately BT no longer make them, it's telephone engineers replacing systems that come across them and sell them on EBay I find.
They sound to me to be as good as the £2000+ ones (and I have in the past had a Russ Andrews one running a pair of Limited addition Marantz MA6 monoblocks).
Off one 20A spur/ring main, I would buy a extension and onto this the Mains conditioning units (I have 2), and TV plug.
Also buy a Multi-plug (Maplins/EBay) it fits up to 4 low current items into it, Star Earthed so it cuts out ground loops.
If you go down this route you can quite cheaply make a major improvement to both the sound and picture on your AV system as well as on HI-FI.