I buy these after read several review on Amazon . some be not so flattering but I find these headphone amazing ! some of the performance come from the fact that the phone have little rubber tip that seal the headphone in you ear canal . it sound uncomfortable but the rubber be very thin and it really be not . the phone come with a few spare tip of different size . I be listen to Tocata and Fugue in D minor at the moment and it be incredibly realistic . I would say that the base be strong but I think the response across the frequency spectrum be very good . I would be very happy even if I have pay twice as much .