Originally Posted by seditious3
Thanks much for the quick reply Bob. So which is the best way to go:
1 - Digital coax from computer into digital coax to Oppo?
2 - USB from computer into USB asynchronous Oppo input?
3 - Wireless file sharing from Windows 10 computer to Oppo?
4 - Dedicated external hard drive into Oppo usb?
5 - or???
I'm looking for the best-sounding solution - that's the primary consideration.
Also, it's my understanding that the Oppo won't do multichannel audio (eg:SACD) through the digital coax or asynchronous input.
Asynchronous DAC Input is Stereo only. And SACD licensing prohibits transmission of SACD content over S/PDIF (Optical and Coax) connections due to the lack of copy protection.
There are several considerations here. Using a directly attached hard drive is the simplest, and lets you play all the media file formats the 105 supports, both stereo and multi-channel.
Using Wifi or Ethernet to access files on an SMB server is very similar to using a directly attached drive. Accessing files on a DLNA server adds setup complexity, but once you figure out how, DLNA servers can offer advantages. For example you can use some application that knows about that DLNA server to browse its files and "push" the files to the OPPO for playback -- so you are not bound to the file browser built into the OPPO or OPPO's iOS or Android MediaControl app.
All of those cases involve the OPPO rendering a music file into audio. Sometimes you might want to play audio your computer knows how to play but the OPPO doesn't -- such as from a music generating program or from a fancy playback app that runs on your computer. So long as you are OK with stereo into the OPPO, the easiest way to do THAT is to use the Asynchronous USB DAC input on the OPPO and have your computer treat the OPPO as a fancy "sound card".
If you want best quality for file formats the OPPO knows how to play, a directly attached hard drive is definitely the way to start. It's simplest.