Received these today:
Akoustyx S6, studio reference tuned planar magnetic IEM.
Lack of info aside from the company's own page had me a little concerned, but on first impression they seem pretty good.
Diameter of the housing is pretty much identical to bullet-style Etymotics (7mm). Driver must be tiny. Recognisably planar sound though. Slick.
Housing seems to be identical or near-identical to their R210/R220 BA IEMs.
Quick initial comparisons:
Next to the Etymotic er4sr, the S6 has quite a bit more sub-bass. Bit much for a DF-head like myself, so I'm EQing the sub-100hz region down a notch. Further up the tuning seems roughly in the same ballpark. More extended in the upper treble I think. Good stuff.
Next to the Letshuoer S12, the tuning of the S6 is far more well-behaved (I find the S12 pretty much unlistenable without yanking the bass way down and cleaning up the sizzle in the treble, so that's a low bar to pass.) I don't feel qualified to talk about technicalities like detail and imaging and such, but on first impression I don't notice a big gap one way or the other (and that's
not a low bar to pass, cause aside from tuning I find the S12 quite excellent). The S6 does sound more spatial to me, but that could as well be due to the tuning.
Included tips seem decent enough, and I like how they colour-match with the housings (red/blue cores matching the red/blue bands on the housing), but the largest ones are still a hair too small for me. Ety tips don't fit cause the nozzle is much wider. Found another good fit in my tip collection though.
I think I'll be listening to these a lot.