I already have the Koss KSC75's. They are my work headphones - paired with my Creative Zen Vision:M and a custom EQ Excellent pair.

I'll probably consider getting the AT's and just keeping the speaker set that sounds the best with the Prelude. So you think that the AD900 is a better computer headphone for games and music? So the bass is a bit weaker than the A900, but its still more than my KSC75's right?