I discovered I was treble sensitive when I put the analytic pads on the 1990, but I used the balanced pads for years without treble bothering me at all. Maybe just me, but those pads make a huge difference.

I do think the HD600 are a better value option, especially for music listening. For gaming, the 1990 have wider staging and I think are better. But the HD600 are also perfectly useable. Another thing is the 1990 is maybe a bit easier to drive; even though it’s high ohms, it’s still pretty high sensitivity. And one cable instead of two dangling from the ear cups.