I'm reading a lot about NX7 and I see that mods are already being made to adjust their profile to the preferences of each one, trying different sources, using countless tips...All this reminds me when the KZ ZS5 and ZS6 were released...Something similar happened. I have yet to publish the review of the NX7, but I must say that their profile does not fit my preferences. That doesn't mean it's bad IEM, but it's a profile I can't hold for long. And I'm not going to try to make any mod, beyond using a few tips. If I want a different profile, I think I have about 20 IEMs, which can satisfy me more. I'm sorry for the good Jim, but I must be coherent with my judgment.