I know what you are saying - with 'some' digital low end / bass Im finding they seem to struggle a bit too accurately & fully replicate the sound
although only with excessive bass, i would say - think James Blake!
Im finding though with analog bass though they are just superb - give them some cello or bass guitar and they sing! Band of Gypsies is divine
Also Im finding tips can make a big difference - Definately need to find a good symbiotic set
Will review fully in a few days
Burn in is changing them a fair amount so we'll see how this pans out after another 25 hours
If this issue remained I don't think its neccesarily a problem because these headphones have not been tuned to be bass monsters!
and as such I dont think they will attract your average 'Beats' listener