When I say the sound of the universals is inconsistent I don't mean it's bad. Its still great but to my ears the music sounds different depending on the fit in that instance. This sentiment is echoed by many users who say sometimes with the universals they can really feel the kinetic bass and sometimes not at all and similarly people who have custom Xe6 and Rn6 says bass notes produced by the kinetic bass are much more obvious and delineation of bass and mids is much better. To my ears sometimes the same song can feel a lot more holographic or less and sometimes bass feels like it has more impact, texture and sometimes it feels more diffuse. These are all tell tell sings that I'm getting an inconsistent fit and sound. This isn't about using the right tips, I'm getting a great seal. I think it's more about how the kinetic bass port couples with your ear anatomy. In addition the placement of kinetic bass port relative to your ear will vary depending if you're wearing the iems further forward or back. I'll add that the name kinetic bass is misleading as the driver is actually full range and I think it does impact the mids.
I think the universal Rn6 and Xe6 suits smaller ears. Theres a fairly large size discrepancy between universal and custom. If you wear a deep fit and by doing are so covering the Atom venting port with your ear anatomy, this will certainly have an effect on the sound. You're not getting pressure relief and you're getting maximum isolation thereby raising the bass past what the gold module would offer.
My best advice would be to audition the universals and then go custom. Only then will you actually get Rn6 and Xe6 to it's full potential.
