I haven't heard the D600 but the D7100 was such a monstrous disappointment. Sounded, to me, like Beats By Denon. The midbass hump was so big it swallowed up everything else. I'm a bass guy but it has to be big bass that complements the music, not devour it. Even at lower volumes when bass happened it was like the speakers couldn't figure out how to play the bass as well as other stuff.