Hey guys and gals, here's my take on the B200 (in English): http://kopfhoerer-lounge.blogspot.com/2017/05/brainwavz-b200-review.html#more
Oh yes, Brainwavz did a lot right with it (although the choice of the used cable and identical housings known from the single-BA B100 & B150 is a little questionable). If the B300 and B400 turn out at least equally well when it comes to overall tuning and price-performance-ratio and can also compete well with other comparable IEMs at their respective price points, I predict Brainwavz to build a good reputation in the BA and mid-fi segment.
Keep it on, guys and gals!
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Very nice review but the big dip around 4-7 kHz on FR graph does look a bit scary
For B300 and B400 I would like to have more extended treble and dynamic