I received my NiceHCK NX7 Pro Yesterday. The rest from 11.11 still yet to come.
I love the cable (that is NiceHCK 16-3 copper cable), and nice transparant clear resin body shell. Love the looks of the case, different from usual faux leather black case.
My first impressions OOTB they are a bit on bright side even though Im using the silver filter, high mids are more balanced but 7khz still there with 10-12khz tizzzziness. Hope these will be better after burn in because they have a lot of detail information there. They sounded busy but with very great extension. Mids not recessed, but not too forward, Bass part are the best part I noticed straight away. Very well controlled punch with deep extension, fast enough decay and attack, sounded clean and high quality. No mid bass bleed. I can dig these for the bass. Texture and articulation also on high grade.
Trying the red filter which are filterless (there is no damper at all), I couldn't listen to them. Triple 3khz, 7 khz and 10-12kzh peaks were drilling my inner ears. If I left with no choice as an original NX7 owner, I will put in sponge to damper tizziness of 10-12khz and put on micropore tape but without blocking all grill holes to cut down high mids. Later i will try because with red filter, listening to the bass part only give me Raw presentation of their great double DD tuning, I can't sure enought to tell if they are sounded better (the bass and lower mids part) because I feel more clean and unveiled (with other filter obviously they are veiled by the damper), just a slightly better but i dont dare to confirm this as maybe just in my brain.
Blue filter is the worst. They are meant to be bass booster, or reduce any other frequencies but the bass section. But my observation they just double the paper damper like on the silver filter. They reduce the high mids more become too dull while keeping the bass buuuttttttt they left with 7khz and 10 khz tizzzzinesss which i heard, boosted bass but a little bit bloated, dull mids, still with that tizziness highs. These blue filters will be stay in the box for me.
Technically they are good, good soundstage with depth and height even though not so wide, above average. Great resolution, good imaging, good separation. Close to lovely tuning if they dont have that tizziness. They are still new, I need to burn in them and will put my additional impressions later. Easy way to remove the tizziness just put in low density sponge (sony high end IEM are using sponge for their dampers) but I will try to burn in first. Bottomline bass are punchy and clean and well controlled.
To the burn in machine they go..