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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@uberwaltz Was the Exogal fuse swap difficult ? What size and spec would other comet users need ? Thanks,mike.
Upgrading from Golden Ear Triton One to Golden Ear Triton Reference speakers. Made possible only because I was able to privately sell my T1s at a good price.
Tekton DI upgraded speakers, Cerious Technologies Graphene Speaker Cables as well as GE interconnects, BAT vk 55se, and last, but not least, I plugged my pre amp into the same outlet as my amp and that made a huge difference in sound as well.
Another year above ground, listening to my 'rig. Hoping for many more!!!
Cheers,
Tim