Okay so I'm thinking of getting either the schiit magni 2 or just the fulla but I wanna know. Will I hear a lot of difference than if I didn't have an amp/dac at all. I don't care about specs I just wanna know if I will hear a significant difference that would make it worth 100 bucks

Below $100 AU preferably Okay so I scored a deal on some HD600's and they will be my first "audiophile" headphones, so I have no clue what to get for them. Should I get a sound card? An amp or dac or both? Or should I go without anything at all?! It's all very confusing and expensive. I really...