Add an external DAC. Make my Oppo UDP-205 a true top player

I would replace the Oppo power supply with a linear power supply and use it as a transport. A good digital coax cable like the DH Labs D-750, though an ifi audio SPDIF iPurifier into a Black Ice Audio Tube DAC, Chord Electronics Mojo or Qutest DAC; all great, reasonably priced options.

@vinylvalet- Thanks for your feedback and I agree that a good linear power supply would definitely make Oppo 205 player sound good let alone being a better transport. But how do I do that? I am not comfortable opening the top cover and replace parts from inside the box. I don't want to send the unit to a 3rd party and spend a fortune for that upgrade...
Do folks have any comment on playing music over network/ethernet against using a transport?

If you get the ability to stream a near unlimited world of new music in hi res while just sitting in your chair for 15 bucks/month, I’d say that pretty much kicks the crap out of having to get up to change and listen to the same discs over and over. Buying a pricey LPS to power an Oppo to use as a transport or otherwise doesn’t seem like a wise use of funds to me — better to put that money into a DAC and maybe a reclocker IMHO.

I found the use of an Equitech 2Q  for isolation plus an MIT Oracle AC power cable made a nice difference. (I had them prior to picking up my near the end of the line 205-- a little pricey relative to the Oppo; but it shows the 205 has potential beyond what you get from standard ac power, by quite a bit.). I felt lucky to get my Oppo and continue to be highly pleased with DVD's and Bluray's and streaming from my cable provider. Going to move up to a Samsung 4K and kind of excited about that as well :)

While the Oppo might not outperform a really nice DAC or a dedicated SACD/CD player, one thing you might want to do is keep the player "on" for at least an hour before listening. Another thing is to use a good power conditioner. In my system it made a big difference and I like what I am hearing. Even Spotify played through Chromecast Audio through the Oppo's optical input sounds pretty neat.