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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A toss up between the V2 firmware upgrade to my EMM Labs DA2 DAC (pure heaven - it’s now the digital I've always dreamed about) and the Dan D’Agostino Momentum M400 monos (believe the hype - just on a level all its own).
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