What are the best settings for Oppo 105-D as a stereo player.

I bought a used one, you first need to hook it up to a monitor so you can see the menu,

download the manual if you don’t have one. I read it on-screen, print selected pages, make notes for now and if I need them later.

do a reset

download and install latest firmware

make whatever settings others advise you to do.

now move it to the music system.

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if you think you may also use it as a streamer, you could learn/make setting changes now, or plan on moving it to a monitor to see the menu (or monitor to it) to set up streaming settings.

read the manual, you need to do this yourself,

I sold mine, so I cannot check settings.

what I remember, experienced:

I tried XLR for long run, to use it for Video (dual hdmi cables), and second audio output XLR over to Music system, for music only. weird noises occurred, sent those cables back.

I didn’t see or hear anything superior to my existing blu-ray player in video system while it was there. 

Kick ass audio and video

moved unit into music system, rca cables, firmware, .....

I didn’t hear anything superior to my existing CD player in music system.

tried ’pure’. bypasses video circuits, I heard no difference.