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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