Most of todays BD players only have HDMI, optical/coaxial, and stereo RCA audio output. This means even if the unit will play SACD it will not output multi-channel SACD from any output other than HDMI. Now, if you have a receiver or pre/pro which does not have HDMI inputs, you're out of luck if you want to enjoy multi-channel SACD. Since the OPPOs have multi-channel RCA output those with a receiver or pre/pro which does not have HDMI inputs can enjoy multi-channel SACD.