I’m prettty sure he is referring to the 800S and the alleged increased bass distortion. As an owner of the 800S, I don’t hear it, and I don’t believe it. I lean towards Jude’s measurements being more accurate...but I don’t want that debate to spill over in this thread so to everyone in the other camp YMMV.
Nope... both the HD800 & HD800S. Jude has put to rest the increased bass distortion urban myth on the HD800S pretty soundly.