I have to challenge you on that one. When I auditioned the HD800, I had the K701 as a direct point of reference, where I'd AB between the two. You may be relying on memory - the HD800 had a better bass extension and presence than K701 - which for you may have countered the extended treble presence of the HD800 over the K701.
For my preferences, after auditioning the the HD800 - switching over to the K701 gave me a huge relief from the treble stridency I experienced with the HD800. This is in stark contrast with my reference rig where the HD650 serves as relief to the discomfort of extended listening to K701 - in terms of treble presence.
I am simply being as helpful to Midoo as much as possible - can you personally recommend the HD800 over the T1 for Midoo - as you own both?
Challenge away...I know from personal experience OWNING BOTH at the SAME TIME. One of my very fist observations were, boy the treble is not anywhere as "hot" as the K701 or DT880.