The Quadro cards support stereo. Some (like the FX1400) have a DIN outlet that fits with NuVision stereo emitters.
For stereo, the xorg.conf might need the following lines
Section "Extensions" Option "Composite" "Disable" EndSection
if the X log file (e.g. at /var/log/Xorg.0.log) says that stereo is not supported by composite