Most satisfying system change in 2017?


What was your most satisfying addition or subtraction for your audio system this year?  Looking for changes in gear, set-up, or listening environment.  What floated your audio boat in 2017?
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My news speakers, first in 10 years, Audio Note AN-J/lx's. The AN DAC-3 signature I picked up for a song used close second.
I'm going to spoil the party and say that one of my Apogee Centaur Majors speakers just went kablooie - but regardless, great topic #knownothing
Swapping my vintage black plate 6L6GC power tubes for new Tung Sol 7581a. Massive improvement.
Another was moving from older Garrard 401/ply plinth to a newly refurbished AudioGrail 401 in 3" PA slate plinth. Cleaner and faster.