I think so
For now you can just use the features of your motherboard's on-board (built in) sound card.
You can always get an add-on sound card in the future.
since i only play league of legends and a couple of steam games like hawken surround sound isn't that important so i think the amp dac combo is for me. I listen to a lot of music as well so i think this is the best way to go. Also im sure razer surround will get the job done when i do play a fps game.
The DT770s are not bass light, where did you see it said the DT770s are bass light?
The DT770 Pro 80-Ohm has slightly more bass then the DT770 Pro 250-Ohm.
I prefer the 250-Ohm a little more then the 80-Ohms.
you have to realize, everyone has a different (subjective) opinion on how bass sounds, how treble sounds, etc. If you want to TRY to get an idea of a headphone's characteristics, you need to look at a LOT of experienced, intelligent reviews, preferably done by people that you respect their opinion in this field.
In comparison to the DT990, the DT770 would seem bass light and the DT990s have a lot of bass.
The last words in the description was "balanced".