Seems I'm really done!

Well, I might bring my tuner to Audio Classics for refurbishment, but that's a different matter- 

zavato, Congrats! I have been there myself on several occasions. Hopefully you have a better run of success staying there than I have. Having my system dialed in perfectly many times doesn't stop me from making changes, often screwing things up again in the process.
DON'T TOUCH ANYTHING

I'm not touching a thing!!!

I'm sitting in a very comfortable chair, listening to an LP though my system, and for the life of me there truly is nothing o would change. I've got full and broad frequency response, nuance, image specificity, depth and width, dynamics. There truly is nowhere for me to go to get any greater satisfaction out if my music! Not merely famous last words, but good last words too! 

Davidpritchard said- 

"I hope you will trial the Synergistic Research Black fuse in your Bricasti DAC and a Synergistic Research A/C wall outlet."

My M1 has a circuit breaker, and I'm already running a good outlet. FWIW, I did a software update on my M1. It's not screwed up a thing.