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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Tidal + Bluesound Node 2/Powernode 2. Changed the way I listen to and purchase music. The only music I buy now is vinyl. 
I purchased a pair of Daedalus "Argos" speakers, they took eight months to to get, but the wait was well worth it. They are very sweet sounding set and the craftsmanship is first class.