Just as the others have said, I found the 80s, when I tested the A1400, had great amounts of bass on their own. I even had pictures rattling from the bass and it wasn't from loud volume levels however, once my Pb13 was brought in to the equation I could tell the 80s were not hitting as low.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70