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?
knownothing
Added two SVS SB2000 subs, handing off to my monoblocks at 80 Hz and above (I can now run the volume on the preamp an eighth of a turn lower), the subs take care of everything below that, got them dialed in over a month’s time, had my audio buddies provide a critical ear, all is well!

"I see faces and traces of home...back in New York City"

Wow!
Got a lot of stuff this year, but streaming was the biggest change.  Tidal and Bluesound Vault 2 added the most--more than new amps, speakers, etc.
Three positive changes:

1. Clear Day Audio Double Shotgun speaker cables (2 pair)

2. Replacing PS Audio PPP with a P5.  An enormous improvement.

3. Replacing 24 year old Aragon 47k phono stage with Sutherland KC Vibe.
The only change in my system was to build a DIY Ultrasoinc RCM, cleaning every LP I own, and enjoying vinyl playback like never before. And, it only took $200 or so in parts, and works like a champ.

One of the best improvements in forty five years in audio.

Happy New Year,
Dan