I don't know if they are bass head level but they have better and slightly more bass than these: momentum, akg k545, sony mdr 7520 , he400, mad dogs,
The bass didn't leave me unsatisfied when taking of the basshead JVC DX700's(dx1000 little brother) and sounded almost as loud. They have the best balance of the above mentioned apart from the mdr 7520 with excellent sound quality. The mids arent transparent until after burn in and they need to be paired with a good amp as fiio products make them sound a little less exciting like they help the punch but hold them back. The soundstage is better than all of the above as well except for the he400 and dx700. I think the bass will fit your needs. It has less of a midbass focus than a sub bass focus and is pretty even there. I use alpha pads on mine and it helps the bass even more. Its not a slow bass. It is more textured than the k545 bass but slightly less than the 7520 and on par but less bloated than the dx700.
Worth a try for sure. The only thing I am worried about the hd8 is the soundstage. I am pretty confident the rest will be good.