I am using a Rotel 1072 cd player with my 990. I use it in analog/Bypass mode (RCA interconnects-MIT). I also have it connected with a coaxial cable. I can easily switch from Bypass to Digital/Coax Upsample mode. The sound (to MY ears) is more detailed in analog/Bypass; it seems that soundstaging is wider. It is very close; as someone above stated, if I didn't have the Rotel unit already, I probaly would just use my dvd player as a transport with the 990 DAC's.
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Anthem MRX-500/ Outlaw 7500, Paradigm Studio 100's Fronts, Paradigm CC-590 Center, Phase Technology Dipole rears , Martin Logan Dynamo sub, Oppo BDP-103, DIRECTV H22-200 DVR HD receiver, Samsung PN60E8000 3D Plasma 60"
2nd System
B&K ST 202 Amp, Outlaw 990, Rotel RCD 1072CD, Yaqin CD 1 Tube Buffer, Apogee Centaur Minors, Phase Technology Model 10 Sub, Rotel RP-855 turntable, Panasonic DMP-BD30, DIRECTV H21-700 DVR HD receiver, Free Agent Home Theatre+, Vizio 40" LED