What specs are we talking about? I never pay attention to them, only the sound (except for output impedance, I wouldn't want that to be more than 3 ohms). I can't speak for all headphones out there, but with Oppo PM-3 and Earsonics Velvet, I feel that bass is better in every way. It's more textured, tighter and it's got more presence and hits stronger. Bass extension is also better, I can hear/feel sub-bass more easily with Mojo. Still though, audition it if you can as audio can be a subjective passion.