Things have definitely calmed down after 100 hours. Hard to say if pink noise sped this up, but I will continue to run it through the unit
I can list quite a few titles for Music to Burn-out to. Really awful stuff. Supertramp comes to mind.
Right, you’re bloody well right! 
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If I engage the galvanic isolation, does that require further burn in? I turned on the GI for the audio output and the sound was bright and fatiguing. No thanks. Have not experimented with the GI for the inputs yet, but output GI is a no go.
I find that lifting the ground or returning to ground on any input or output seems to take a good 12 hours or so to totally settle in. . . but it generally retains the immediate characteristics that strike me at first though they mellow somewhat in contrast.
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Really the wrong place for me to discuss this (but I will anyway 
) since there is a thread here from a while back https://forum.psaudio.com/t/ground-lift-shell-lift-experience-with-ds-mkii/31945
but wanted to say that I only spin discs so only use i2s input, and I found that lifting the ground on that input would cause me to lose the full, rich, vinyl like sound that makes the MK2 so appealing to me. I leave everything grounded. As with everything audio, mileage may vary.
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