I wouldn't say they cost about the same as the M50s can be found for 100$
And owning both I have to say there is a world, no wait, a universe of difference between bassy M50s and DT990s~600
The beyers (when amped properly) blow the M50s away in every possible way. I use the M50s all day at work, and the Beyers at home, so I use them both a lot.
Not sure about the combination of a Beyers with a soundcard, but the 32ohm version should do fine. The M50 does for sure
Sorry, I don't have more time to get into it right now
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