Thanks for the info guys. Leaving mine on 24/7 with display off.
I think I might be ruined now.
My intention was to run-in the D1 on my upstairs system since it's a solid state preamp and power amp setup then move it to my basement setup after the initial break in. Now, I'm not sure I can give it up and move it when that time comes. I can't believe I'm thinking of it, but I might have to purchase another D1 and SBooster for downstairs now.
Something that is impressive to me about this Lumin are the dynamics at low volume levels. Bass notes have a weight that I was missing with the Squeezebox streamer. Like vinyl, the D1 doesn't seem to hold back on dynamic swings if they're present in the recording to start. My burn-in USB thumbdrive contains a few freebie DSD files and they sound fantastic, very analog-like with great air around instruments. Well recorded FLAC or WAV or MP3 files sound as good as I've ever heard them produced using the D1.
Like I said, I think I'm in trouble having two systems in the house and one D1 / Sbooster. Dang.