I am currently using an MSI M5 Gaming Z270 which is suppose to have a very good onboard sound card with amp. I used to use a Xonar STX II but switched to on-board as the new motherboards shipped with better options on board. I always wanted to try a Dac/AMP combo to see how much of an improvement there would be. I know the Modi/Magni is a popular combination here, but a while when I had the Xonar I was told it wouldn't be a big improvement so I never got one. I have been looking at the GSX 1200 Pro as I'd love to have physical controls and easy access to turn 7.1 on/off for gaming (some games do better with or without 7.1 so having easy access to it would be really nice) but I am skeptical about how good of a dac/amp it is. I currently have a dt800 but they broke so I ordered an HD598 after a lot of debating, between the HD 598, HE 560, and HD 700. I'm on the fence about a dac/amp, I'd get one if I would see a huge improvement and it wouldn't affect how well it works for gaming (I do equal amount of gaming/music while working) but if the difference is minor I'd rather not bother.