Edited from that heavily stretched graph, Blue is Oxygen..
no wonder they got a lot of air, boosted at around 16k, and hump only until 2k then going down, this will prevent high mids from being to shouty. nice!
I found this like perfectly fit me actualy, I like how Sony tune their EX600/800/1000 with bring down 3khz frequency, but you can see there is boosting at around 8 khz for treble sparkles, and 16khz for that air air air.
I dunno if I should buy this, I should not, but kinda want it more after looked at this FR.
currently using Kanas Pros with EQing that 2.5-3khz down, boosting a bit bass for compensating of using spiral dots (spiral dots reduce bass) and boosting mids a bit and 16khz for more air. Results is similar, more body to mids, decent bass, and no shouty high mids