I got my BA100's today. I've only had them in my ears maybe an hour so far and early on I can say they're a very good IEM for the money. The following are very early impressions so please take the following with a grain of salt. When I'm ready to post up my final impressions I'm sure there will be some changes to what I'm posting here. First of all, the highs are quite nice sounding. not overly tizzy and generally great separation for this price range. I would have liked a little more sparkle and a tad more extension but overall I'm hearing a full treble. The mids thus far, for me, are the highlight of this IEM. There's very good clarity and the highs seem to be very slightly forward, maybe quarter step, in comparison to the highs and lows. Vocals are very clear, forward and sound really nice with a very fluid and natural overall tonality. Sibilance control in the upper mids is pretty good thus far but I'll have to throw more music at these things before I can say anymore. Generally, the mids are very fluid with acceptably good detail that swings above it's price point. The bass is well behaved and the overall sig is well balanced. There might be a very slight mid bass peak but I'll have to listen to more music to draw a final conclusion on that. It's also a nice natural full bass that's detailed and well behaved with minimal bleed into the lower mids. Low end extension, pretty darn good for an IEM in this price point. Overall, I'm used to higher tier gear but have to admit for their price these sound like very good bang for the buck IEM's. I think I may have found my kick around work around the house/exercise IEM's. I've owned the Klipsch S4, the UE 700 and 600 as well as the HiSound Popo, Meelectronics 151 and 161p and a couple of sets of Xears and I can honestly say thus far the BA100, going by memory, surpasses most of what I've listed or matches up nicely against the ones it doesn't beat. Stay tuned, final impressions will be posted in a couple of weeks.