What I'm saying is that the tech inside a headphone is important, but only in terms of how it's utilized. You have to look at more than just how many drivers they crammed in there. Now, if you've heard enough to personally know that you prefer this or that, that's one thing. All I'm doing with all of this jim-jam is trying to steer people away from going "what? That only has one driver? GARBAGE!" and then dismissing it out of hand. It is entirely possible the Balance 2 is complete trash next to the Quad, but declaring it to be so ENTIRELY because of the different driver setup is wildly off the mark, and (IMO) the P1/Quad pairing offers a great case study. Impressions and reviews matter a hell of a lot more than anything, because measurements may be a good guidepost but they're only there to explain what you hear, not instruct you what to hear. There are headphones that measure well but sound dull, headphones with weird charts that are enjoyable as all hell. Don't let people tell you that because X doesn't use the same tech as Y that means X must be bad. I'm not an engineer, I'm a hobbyist, but audio's been my thing for a long time (back in college I was huge in car audio systems). The main thing to remember is the execution is what matters, not the setup. It is entirely possible to make a total garbage massive 18-driver hybrid, and entirely possible to make a flagship single-driver. Like I said above, the "reason" behind all these IEMs using multiple drivers is the same reason that home theatre speakers have towers of drivers. By limiting the frequency range each one needs to cover, it enables them to do so with less worry about distortion (that's a vast simplification). In theory, you can keep adding drivers and it'll "clean up" the sound, not to mention it also makes it way easier to tune since you can just tweak each driver individually instead of trying to mess with how one driver behaves over the course of an entire spectrum. TBH I'd wager that's one reason why all these Chi-Fi IEMs are going with hybrid setups. Setting up crossovers to mess with the response curve will take a lot less work than trying to futz with a single driver to lift this or that portion of the response. I'm learning crap every day, so don't take this to mean I'm trying to set myself up like a know it all. I'm a know-a-little. One thing I think I've definitely learned is not to overreach when making statements about anything in this hobby.