I have a pair of dt770 pro 80 headphones, the DG can drive them okay, the volume has to be kind of high but they still sound good. I've asked about other amps before, but what I'm really curious about is the DAC. The Xonar DG is a 35 dollar sound card, while the j2labs stuff is well over a hundred. I've been thinking of upgrading for a while, it seems like an external DAC that is well over a hundred dollars should easily beat out a 35 dollar sound card, just wondering if it would be a noticeable difference for such an expensive upgrade?
I know that if I went to an external DAC / AMP combo I would lose virtual surround sound and other features, but that's fine, I've honestly never used those features before so it's not an issue. However, if the difference in sound quality is going to be negligible then I probably won't go for it.