Lynx makes a couple of different cards with 2 channel but expandable options. Their converters sound very nice. The obvious choice to me would probably be something like an RME Babyface, but I am a fan of RME. I still go for external preamps and try to avoid the on board pres in general when high quality is needed.
"I believe that entertainment can aspire to be art, and can become art, but if you set out to make art you're an idiot."
Show business: we're all here because we're not all there.
Resistance is not futile. It is voltage divided by current.