Sorry Garf, I can't express it better in english (native language: spanish). To give you an example, go to the Treble control of the souncard and lower it. That's how it sounds, dull, and sometimes worse. Like if the sound comes from far away, low fidelity.
Btw, where's the index to those links you're giving me? I wanted to browse different results for other cards too, if I can

Any card recommendations? mostly for my kind of usage (audio listening, lossy and lossless, not games). Nothing very expensive, but better than this SB128.