Interesting result. (Deja vu. 
) I wonder how this compares to some other new open-backs, like the FiiOs, HD490 Pro (with producer pads?), Beyer DT 900 Pro X, or AT R70xa, for comfort and sound quailty.
To be compared favorably with headphones like the Senn 6 series and Sundara is rather impressive though! And I wish there were some other major mfrs (like Sony and AT) that could really come up with something that’s more competitive in this space. Maybe with a slightly warmer tilt?