Experiments over the last year or so have given some useful results, and we have had lots of useful comments - thanks. So far…
You can genuinely improve a good rack and/ or wall shelf without vast expense - but actual SQ improvements are small (even for the LP12) and very room-dependent and some are volume-dependent too.
On a ‘light and rigid’ support, an LP12 is to me better with no base than with a Tramp. However, the SRM base is an improvement over no base and works well with the matching platform. Without the platform, and on a good wall shelf, I am not convinced that my LP12 with SRM base sounds materially better than a newer LP12 with Linn’s aluminium base - it is the base and platform together that get my vote.
For any who do not believe that all cables sound identical, Witch Hat to me beats Naim for sound and convenience (e.g. Morgana beating Hi-Line), at least in my room and system.
My record cleaner is so effective that my Krystal looks good via microscope after well over 1200 hours and may do another year. Don’t assume the max lifetime numbers suggested by some makers or sellers of cartridges apply to you.
There is no material and consistent SQ difference between playing a CD, ripping and serving a CD and just using Qobuz - but there are plenty of albums where streams are clearly better/ worse than my CD.
I think that last thing to investigate will be power, an area that encourages me to expect twaddle and worse even more than mega-expensive interconnect cables.
My hi-fi is powered by a double-socket on the wall. One socket powers a 4-way Hydra from Grahams (so 4 kettle leads), and that powers Supercap for 52 and Superline, PS for CDS2, XPS2 for NDX2 and 250.
The other sockets has a Grahams-supplied 6-way power block. That powers the Lingo 4, Nakamichi tape deck, ethernet switch and a standard lamp.
First question, should I change that?
Given the quality of my kit (high) and of my house wiring (uninspiring), should I be organising all that radically differently? Can we beat the Grahams-supplied powerblock and Hydra in SQ?
Please bear in mind that answers that begin with a complete rewiring of my house and pulling all the wires out of the walls imply a lot more dedication that I have.
Second question, Powerlines (or rivals) instead of the old and basic Naim kettle leads?
I have previously assumed that there is no point having one or more Powerlines for electricity that has already been through this non-ideal route from street-to-powerblock. Is that probably fair, or should I (for example) be powering everything off the powerblock (discarding the Hydra) and should the cables from powerblock to Supercap, XPS2, XPS and 250 all be Powerlines? And what difference can that sort of cable make to a Lingo 4?
Third question - does anything else need doing? My exposure to WH has encouraged the view that perfect cable dressing on Hi-Lines et al may well make the SQ difference of Naim versus WH very small, suggesting that EMF issues from my bad dressing is a contributor to the unnoticed low-level mush that can get in the way of the music. Applying that to the ultra-obvious area of main cables suggests that I might need to think about shielding (and knot-avoidance) here too, but what else?
All suggestions and opinions gratefully received.