[Niklas1120]

Hey im rocking a standard mobo sound on my sabertooth x79 and i wanted to know if u can damage it with too high volume. im using a 2.0 speaker setup with subwoofer. also can the subwoofer´s volume also damages the sound card?

 

[cel4145]

No. You cannot damage the soundcard that way.

 

[MajorError]

Agreed.
I'm not an engineer, but I think you're more likely to damage your speakers if you crank up the PC output as well as crank up the speakers.  On-board sound is inherently noisy since it's in such close proximity to all the other data-handling components.
It's the prime reason why I don't use the built-in audio, and why  I retired my Creative X-fi (Fatality Platinum something-or-other with the drive bay kit.) 
I drive my AKG K701 with the Schiit Bifrost/Lyr combo, and replaced my Klipsch Promedia 2.1 with a set of Vanatoo Transparent Ones.  Both are USB devices, so no PC noise...