Looking to improve the overall quality of the listening experience - soundstage, sense of space, etc.
You would be shocked at the degree to which you can improve these things for $5k with:Synergistic Orange fuses, HFT, ECT, and PHT. You could do full room and system and have plenty left over for-
Nobsound springs- turntable, speakers, amp.
Cable Elevators.
And that's just the stuff I'm allowed to talk about on-line.