So I have no way of knowing this, but based on what I have read I would think that the IE800 and the BA200 are quite close in sound signature (as close as dual dynamic and dual BA IEM can get being in the same family). Regardless, in very brief and initial impressions I must say I'm quite impressed. I wasn't in the first 20 minutes, as the sound seemed quite thin (but I know better and that dynamics need some time to blossom as I believe in burn in). Well, in about three hours of listening the sound is filling out quite nicely.
What was noticeable and impressive right off the back are the mids. I was just telling someone in an inbox how amazing and progressively forward dynamics have become in having clarity and transparency that you could only get in a BA no more than two years ago. Clarity is outstanding in the IE800's mids and vocals. The only IEM that I can think of now that the IE800 comes close to is the RE262. The RE262 beats the IE800 in soundstage (not that IE800's soundstage is too close to the listener), but I think the IE800 may be the winner in vocal details. Clarity is almost draw (sometimes the TDK edging slightly ahead, and sometimes the Hifiman). I thought the RE262, but the IE800 is beginning to reveal it's great bass. The RE262, however, still has the better, fuller and more natural drums sound at the moment, although not by that much. Strings have more emotion and depth through the RE262, but again, not by that much. I think the IE800 is going to be the bass winner. The mids are so close between these two though, except has a wider soundstage than the other. This is a very good investment for $150. The sound is nice and smooth and refined. Depth and imaging are fantastic. Okay, back to more intense listening. Oh, the TDK respondes well to amping (listening through the Fiio E10/E9 combo right now).