I got today the Perun headphone and now i let it "run in" some hours. The looks is great,this is truly the electrostatic Grado very lightweight and comfortable.So far it's sounding very promising ,quite neutral with old Stax Omega 1 "touch" on it with similar soundstaging and imaging maybe with cleaner midrange.It's quite neutral and "naturally" detailed where i consider 009 to be neutral but unnaturally detailed.Perun has a very quite background and somebody may think it's dark sounding but it's not .I think Spritzer would like this phone:) a bit of old school Stax sound.
First hour of listening says that we are dealing here with a world class sounding headphone for 1K :).The transaction from Russia to EU was smooth with great communication and zero problems .
Update today:the midrange is likely the best i have heard from any stat before,it's huge,very musical,voices like female vocals are stunning,the sound is BIG / transparent
but it isn't euphonic it remains still neutral and balanced.It has warmish tonality quite different overall than any Stax maybe towards HE-90 but it has it's own sound wich is very compelling.Was fiddling with the drivers and headband i don't know which way i should have to use them but tested vice versa and ended to find out that it has significant impact in sound quality how to use them.The sensitivity is close to Lambda models with means these are easy to drive.The structure is very comfortable / soft and very lightweight so you can spend many hours with them.Bass is on the level of better Lambdas and highs are smooth and detailed.Best sound level to drive these headphones are lower volume to average, i would not drive these phones on high levels ,these are best with classical/vocals ambient ECM jazz recordings.