I just purchased Beyerdynamics DT880 32 Ohm version. And hooked it to my Asus P9X79 motherboard. When i keep volume on windows at about 40 % - there are no problems with the sound - everything is clean (although, quiet). However, when i try to max out the volume - some videos on youtube and some audio files begin to produce crackling noises (through both sides) on basses and mid-low frequencies, especially when there are multiple instruments playing. As I am new to quality headphones - I cant really tell where the problem occurs. I tried my other cheap headphones - they work fine - no electric rattling noises at all. Also tried switching OS (Ubuntu 15, Windows 10). No luck. However when i hooked dt880 to my phone - the very same video had no problems at all. (I think it was little less loud).
So my questions is - are headphones damaged? Or maybe i just need an amplifier? To keep the volume low on Windows and boost it with an external amplifier?
Also maybe I should consider the 250 Ohm version (if i need to purchase an amp)