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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Picked up a pair of Klipsch Heresy IIIs..... very much a 180 from my last speakers but very dynamic and fun to listen to....especially with live recordings / concert blurays.   Amazing how great they sound with 40 watts of EL34 power..... hope to build a SET kit soon.
I picked up a very low hour First Watt F5. To my ears,a very,very great amp.
My PS Audio DirectStream memory player.  Paired with my PS Audio DirectStream DAC, the best digital sound I've experienced.