Really great! I'm not an experienced audiophile, but even I can tell these are special. Massive sub-bass? No, but it's there. Massive mid-bass? No, but it is focused, impactful and super clean with zero muddiness. Treble is very well in control of itself, with no sibilance or harshness, and plenty of detail to pick apart individual instruments in a large orchestra. I listened to The Incredibles Suite and it is the best I've ever heard it.