This is my first post, so be gentle! I've been watching a lot of Linus's videos on DACs. They seem cool, but when are they needed? I guess I'm just not aware enough on the whole audio thing. In one of his videos, he unboxed the Corsair SP2500 2.1 speaker system. Does a system like that require a DAC? Does it matter if it's plugged in with an optical cable compared to a 3.5mm? AH! It's a lot of questions, I know. I just want to get into a better audio state, and I want to hear everyone's opinions!