I use a playGo usb (playgo.us). It fills a similar niche as the Audioengine product mentioned in the OP's link. Not a ton of features on top of 24/96 streaming,

I use a playGo usb (playgo.us). It fills a similar niche as the Audioengine product mentioned in the OP's link. Not a ton of features on top of 24/96 streaming, but to it's credit, it just works when you plug it in.