No, not as much. The HE-400 has much more sub bass, but in terms of the liveliness of the bass, I found the HD650 to have plenty. That .5 difference is bigger than the numbers imply.
But then, let's not start the whole presence and impact nonsense. All I'm trying to say here is that the K702 Annie has plenty of bass. Noticeably more than the Q/K of old.
For others: (again quantity, doesn't matter if it's sub or mid bass)
XB500: 10 (only bass)
Ultrasone Pro 900: 9.5
D7000: 9.5 (presence being mainly sub bass compared to the Pro 900's mid bass)
having owned hd 650s + these headphones at one time or another, i agree 100% with this bass quantity comparison.
btw how does sub-bass quality and bass decay compare on k702 annie vs. hd 650? the hd 650s have very clean deep sub-bass that is very subwoofer-like imo without becoming bloated or exaggerated, though it tends to be on the one-note side at times.
Edited by Dubstep Girl - 1/4/13 at 5:33pm