I just got a pair of AKG K271 to use for mixing, since I can't really use my monitors like... ever.

They've gotten great reviews, but I think they sound quite weird. Extreme treble and high mids, very little bottom end.

Is this the way they're supposed to sound or do I need a headphone amp for my laptop? Or do they need to be broken in?

I'm certainly no audiophile and they're meant for a neutral mixing environment, not for listening to music.