Oppo is a reference quality Blu-ray player with the ability to play certain types of media files also. Oppo BDP-83SE, the model you have mentioned is no longer available. The latest corresponding model is BDP-95, which uses a SABRE32 Reference Audio DAC and is targeted at the audio enthusiast. But it is very expensive.
I think if you are primarily into high quality music, you can buy a CDP. If movie watching is a must, look at a media player which can also play lossless audio formats, and an inexpensive Blu-ray player.