Now to S1X.
After unpacking and set.. burn-in was quite necessary. I let them play for an hour at 50-70db and then did the sound cheek.
Was very disappointed at first moment. No lows at all.. I mean nothing under 60hz.. Was shocked but after every next song lows got deeper and deeper. Uff.. burn-in takes a time there

It seems they need at least few days.
Nevertheless tone is beauty. If the monitors are set right they perform great (and opposite). I tried to do some mixing with them.. here are my thoughts:
+ definition
+ details in mix
+ frequency and phase are accurate
+ audible distortion in the mix/master
+ IMHO this small boy is real brother of S3X-H (tone and overall character of translation)
+ perfect in low levels
+ hardcore X Tweeter.. much better then previous model. Shows sibilants in a more noticeable way.
+ naturality
+ I don't hear the speakers
- need sub
- when pushed harder a lot of trash going in low mids and base.. woofer should perform above 80hz..
- no CINCH!! Yes.. I need RCA's in my speaker.
- volume limitations
- power down in the back of the speaker (sometimes you want to turn off speaker or mute it)
- need more controls in the back
- why so small?
Overall it's a great speaker. And you can mix-master with it easily. But I miss power. I am not a sub lover and any hyped kick makes me turn down the volume of the speaker.. but this time I don't hear any convenient monitoring of the low-end here (surprisingly).
Now I am considering about S2x.. don't about kh120 anymore because it's less power in it. However eggs are also not interesting for me anymore. I didn't hear both.. but I definitely satisfied with SX.. only thing I miss now is power. This is the reason why considering mid-range KS88 or at least S2X.
But KS 88 is still in my mind. Anyone compared these with Adam? Would be very helpful. I think I am going into 88 anyway.. three-way midrange is three-way midrange.

But it must perform at least as good as S1X in high-mid-range.
Thanks anyone for help! Really appreciate!
Andrew