Finding a DAC that will process SACD's


I have a Oppo 981 that plays SACD's too. I definitely want to add a D/A converter to improve on my CD player. The Benchmark and PS Audio units have been recommended in my price range. But I want to make sure they will process my few SACD's. What do I look for in a DAC to know if it does. Any recommendations ? Need a little help in trying to educate myself on the higher end gear.
128x128jimbur1956
In addition to proprietary connections, one can output DSD over HDMI to any AVR or pre/pro that will handle it. Those will handle PCM output from the player, as well. More will be coming on line very soon.

Kal
Thanks for the response. Kind of already knew what the answer would be. Just didn't understand why, now I know. Hopefully sometime down the road in the near future there will be something affordable out there that will process SACD's.