I managed to try Denon AH-A100 during my business trip in Taipei.
One of the shop is sold out but lucky enough the other shop is still having a demo unit.
The overall characteristic of this new headphone is very similar to the older brother model AH-D5000 but less detail and less bass. As for the mid is still very denon way.
I only tried it on my iBasso D10, which allow me to drive low impedance headphone but only reasonable result.
If you think D5000 have too much bass for you, perhaps, A100 may fit the bill. It definitely looks pretty good in outlook too. :)