I hope it doesn't sound like the Mobius, in which I thought was pretty mediocre sounding. Matter a fact, I've most often I've been disappointed with Audeze tonal response and at times resolution of their expensive headphones, and I'm wondering if this will be the first time they put out a decent tonal headphone (because the upper-mids on their headphones recesses, which makes me think they have no control over the response there). I doubt that they are able to compete with the Sennheiser 6 series tonality. One big factor is the impedance. The better Sennheisers are 300ohm and it's partly the reason why they sound so good on tube amps, which is not usually the case with planars.
Since extremely low impedance, compete with headphones that are driven by portable sources?
The graph does look intriguing. Who's measurement rig? I also have to see several samples measured (from several different measurement rigs) to see if this response is consistant. Sennheisers are pretty consistent as they have great QC, and can't say the same about Audeze. They drivers in the past has been known to have sample variances.
Lately, I've measured their LCDi4 $2.5k iem, and the response was total crap. Due to my experience with their products, particularly their drivers, I'm very skeptical of their products.