Just got these because was really curious about BA IEM's. It's an awesome IEM for the price (32€ shipped). Very spacious, good instrument separation. Orchestral, classic and vocals are amazing. The bass is somewhat lacking but not overly so. Im currently using some foam tips since these tame a little bit of sibilance. However i found that tip rolling doesnt do much to taylor the sound. There is a change but not a big one like in the Havi B3.
The fit is a little bit weird, sometimes i can't get a good seal and sometimes when i feel that i got a good seal the sound it's still not the best. Sometimes when i feel the sound is the best is when i have the IEM almost falling from the ear canal =P I blame this on my ear canal =P
What i hate the most....the cable. It's just horrendous...a lot of microphonics. It's light and because of that the IEM is really comfortable but i wouldn't mind a thicker better build cable in exchange for a heavier IEM. Also i can see the l shaped plug tearing apart with use. The strain relief on the jack is not the best. Would love to see if someone is brave enough to reachable these. The delta shaped thingy doesn't add or detract nothing to me so im okay with that.
Design is really cool. I hate white electronics (i got the cheapest one which was white one) but in this one is kinda cool with. These are sensitive so i can clearly hear some noise from the port of the macbook. They do benefit from a nice dac but don't need an amp.
Just don't get how somethings in here are fcking hyped and these marvelous little suckers barely get some love.
@wijnands i will send you a PM in the next couple of hours =D
Btw guys what would it be the natural successor to this BA IEM? Do you guys have any suggestions? Sony or not.