I'm looking for a sound card for my computer, which is hooked up to stereo hifi setup. I'll be using it for music and films, not games. I've seen that the STX is supposedly the superior card for a stereo setup, but this has always been in the context of headphones, and the card seems quite headphone-oriented. Is there much point in choosing the STX over the D2 if I'm going to be outputting to a stereo amp, rather than headphones, especially considering the significant price premium? Thanks