My measure of trn ba15
They are very great, I just put foam tips included for warmer sound. But it's a very very great full ba iem.
Clearly better than cca c16, more balanced than ba8, very very very very detailed.
It supports all music styles ( less the metal ). Absolutely incredible in classical music genre.
It can be too treble oriented on some music and must be used at home to profit of all details purposed.
But isolation is good, they are not too big.
Trn does a very great job, 15 ba could be a big fail like asx, but it's clearly not the case.
Good ba bass with great presence ( but stay a ba bass and not enough for fun genre )
Great and warm mids, very detailed,
Very detailed high, but might be elevated, not really aggressive, no sibilance got the moment, just too much volume for me.
The soundstage is large and deep, but not the most large I listen
Honestly I was curious and afraid after asx, but we can see the work on it. For classical genre is just a must, THE choice for me