Yes I agree but the difference won't be that significant ( at least in my eyes), especially considering how zero is already a pretty much tuned excellent. On the other hand a different (better) driver with a good engineering work (including tuning) can give much noticeable boost in technical abilities. Tuning is not everything, otherwise 1k sets would make zero sense since u could basically tune a 20$ single DD iem good enough to make a 90% performance of that higher end iem.

I understand that u have to tune different drivers differently to match Ur target FR graph and my point still remains since nothing can stop truthear from adjusting shell and nozzles and crinacle to tune different drivers to his new target, my point about driver upgrade still remains since as I said Zero with different FR response is a side grade and only a driver upgrade with good tuning can make me want to buy project red.

I expect a better drivers, that's it. I understand that they will affect cost so I don't expect them to make a 50$ monarc mk 2 level of technical performance but Zeros DD's can definitely be replaced with better ones(like the ones which olina is using) and it will affect technical performance in a good way.

>making changes to the drivers

Yes, this is exactly what I want

No it isn't since I'm seeking a better technical performance as well, otherwise it's just a side grade.

Wonder if drivers are any different, otherwise it will be an upset I guess.

Definitely. That's much better than buying hundreds of cheap sets

That's a big jump