no, not necessarily. In fact , a download of a dfx type audio enhancer, would prolly do the exact same job for you....i'm ol skool, and way back when, audio technica was cheap stuff, or so we thought, when comparing the specs to what we DID buy back then: Marantz, Pioneer, Kenwood; and for me, only Sennheiser headphones.
your on board audio is stereo, or should be; and that sound card offers no specs for signal/noise ratio, or total harmonic distortion..
also you listen to lossless format music. sounds impressive, but what device to you listen to it from...most of what is out there is a tin box- ipod, mp3 player, pc, docking, ..and it sounds tinny...
when was the last time you ....i'm sorry....have you ever heard high fidelity before.
the closest you'll come in this tin age is with an mp3/ mp4 player from COWON. i BS you not.