in the manual, it says either slot and the dealer said he usually puts it in slot #2, but i will double check.
right now I have a trusty 18 year old denon 1910 cd/ DVD player as my CD player with the coax and an optical cable from my Sony oled playing hi res music from YouTube music videos which actually sounds excellent and the reason I have been putting off streaming for the time being.
I do want to pick up a audiolab 6000cdt transport this week for cd’s.
I have been running this setup for years with the ps audio dac, the old Classé stuff and now the accuphase integrated and all of it sounds awesome and crystal clear.
so, those are my main sources for now. I know not ideal for everyone, but works for me. The only new variable added was the dac 60.