When I 1st heard the T10, I wanted to keep the info to myself, like my own secret. It was a HUGE improvement on anything I have ever heard, and more so when some appropriate EQ and what I would consider are tips that fit my ears, and the sound signature I like to hear - open and all frequencies, are applied. To take was was already very good to even better.
I wish it was just the tone and tuning. As I'm really aiming to get across is that - ALL The EQ in the world, cannot bring the Zero 2, the one I have, anywhere near the kind of clarity that the T10 produces, straight out of the box, with the stock eartips. I have tried, and it's something beyond just the tone. My personal wish, everyone deserves to hear and own a decent planar magnetic IEM, like the T10, or at the very least, if this is too expensive, I understand that there are now two good planar magnetic IEM alternatives, that also deliver a respectable result.
The KZ PRX and the Sgor Luna, which can each be had for $35( or less), when on sale. My point is that, for not much more than the cost of the Zero 2, is a sonic quality produces by IEM's like the KZ PRX, Sgor Luna, and ARTTI T10, which sound so much better. Nevertheless, I think every one should own a Zero 2, to appreciate the difference when they hear something better. How do we know something is bright, unless we have something dark to compare it with.
As usual, there is also a bit of human inertia, we stick to what we know, and are familiar with - single DD's, cos that's what most of the world listens to - Dynamic Drivers. But this inertia may be holding may back. I posit that 30 minutes, actually not more than 5 minutes, with a well fitted planar magnetic IEM, no need to EQ, should convince most, to retire their Zero 2. So rather than theorise, if we put this to the test, I fully expect those who have been singing the praises of the Zero 2, to immediately desire better, after they have heard better.
I think gear should no longer be reviewed unless, one references it to something everyone else knows well.
This is the value of products like the Apple Dongle and the Zero 2, bargain basements of what is acceptable and also affordable to most people, as the start of their audio journey, and I would hope everyone would own both of these, for use as backups, and also as a reference, so that when one owns better, one can hear and appreciate the difference/improvement, of better gear, cos the improvement is audible.