I am looking at getting the dt 990 250 ohm headset and want to see if my mobo can support this resistance but can't seem to find it anywhere in my settings, manual or online. I want to see if i can get out of buying a headphone amp if possible. I have a Gigabyte x570 gaming mobo and saw some people day gigabyte supports up to 600ohms? Highly doubt that but if it can do 250 that would be great. If it cant do 250ohms, does it matter or create a sound difference in my between the three ohms levels lets say if i were to get the 32ohms or 80ohms? Always wondered if when they have their appropriate power if there is truly a sound difference.