I searched the forum's archives and didn't find any up to date information regarding the current state of SACD playback equipment vs current CD playback equipment. I also couldn't find any online information (Google) regarding the availability of quality SACD players for a computer such as is the case of available combo-Bluetooth players which play all formats; Bluetooth, DVD and CD, all in rw formats.
I figure the next step-up in sound quality improvement after receiving the ordered set of headphone cables for the HD-650, would be the addition of a SACD player; preferably one that fits into the computer's desktop box. Doing so would allow one to rip in all formats (SACD, DVD and CD) for the highest possible recording quality, reasonably possible.
I'm not wanting a SACD desktop box, although I could easily slip one under the monitor if indeed it was shown to be necessary as I'd like the SACD box installed in the MoBo box, which sits on the floor.