After listening for many hours maybe i can safely categorized this iem as ultra smooth. Bass being bassy but not overwhelming. Mid is present and quite good but somewhat veiled and highs attenuated.
Coming from e80 the lack of transparencies are fairly noticeable. Bass is plenty but never overwhelming. On fact everything is tuned to be safe here. You can push the volume high and never get any fatigue. But also means it's quite boring when nothing is punchy. Mids can and vocal get quite engaging if you push the volume high. The grain from piston 2 no longer present here.
I wish it could get clearer and highs to get more extension. Eq don't seem very effective here except for the bass. Tune down some bass and you can actually enjoy the smooth grain free vocals and mid treble presence.
Imaging is average. Depth seems nonexistent, at least to my ear anyway. Soundstage from my memory is tad better than piston 2. Separation is messy, average at best. Focus too
The mid bass is nice. Wish it could be tighter with burn in.
Tried rolling some tips but doest change the sound much. However I do welcomed the added isolation which is quite good actually.
Is this a harsh (early) impression on 20 dollar iem? Perhaps so, but everyone has high hopes for xiaomi who literally introduce many to audiophile world. Is it as lame as MI Headphone? Not at all! I really enjoy the smooth mids to be honest.
As a budget hybrid iem the sound it reproduce is right on the price, but as expectations soaring high, in the end it is your ear
. Try it yourself. It might grow on you and of course this is head fi... nuff said
Source : iPhone 5. Pc with creative x-fi extreme, SGS1. Various mp3s alac flac and Spotify.