I don't use a "reference" recording. I use a number of tracks. Most are tracks that are deeply imprinted in my brain. I think it's easier to notice where a recording shines on a system. I also use genres I don't normally listen to so there's no bias as to what I'm hearing.
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.