Grounded Pre/Pro - Question

polkatese
polkatese Posts: 6,767
edited January 2010 in Electronics
Just an observation: my old REF50S2 Pre/Pro has a ground prong (three prongs) and the new Marantz AV8003 has no ground prong. So the question is: where the grounding goes on the AV8003?

Btw, it has no effect on SQ or PQ as far as I can tell, no increase in noise floor or hum or anything of that sort.
I am sorry, I have no opinion on the matter. I am sure you do. So, don't mind me, I just want to talk audio and pie.