Lack of bass

These headphones offer clear sound, clean, very nice on classical music and the voice (listen to Adele with these headphones, but happiness!). But on more punchy tones type electro, pop-rock and GNI, lack of bass shows the limits of these Beyerdynamics. Few satisfactory change significantly by adjusting the equalizer, leaving listening frustrating and pushes up the volume! Too bad, because apart from that, the sound is made, the insulation is correct.