@inna ...Now digest all of the personally pertinent parts of the above...
And go have fun following your muse... ;)
Fine tuning the system. Where do you start and how do you proceed ?
It sounds good and yet..
Leaving wall current alone - it’s a separate big problem. Leaving the room alone too.
Do you begin by seeking out best LP pressings ? Or tube rolling ? Or cables and power cords comparisons ? Isolation devices perhaps ? Something else ?
How do you go about it ?
I tend to start from the beginning - LP pressings.