Thanks for your review.
Hmm, the Lumen should have been my end game iem. Now I am not so sure about it. Not really that the Lumen/Lux is not a good fit for your ears (soundwise and anatomically) but it made me realise again that one will not get its end game iem without doing a listening test and for the Lumen/Lux this is unfortunately quite difficult to do here in Europe.
Blind buy in kilo buck range?
A more general question, maybe more to Josh than you guys, with this ear canal variations in mind, how can a developer tune an iem anyway?