I think the shell material plays a bigger role than just tuning and implementation. Since stainless steel is dense, it could alter the way the moving diaphragm interacts with resonance and internal reflections, possibly affecting the overall sound signature…
Well will just wait for what @Rikudou_Goku has to say
P.S - Shit that actually does look like a turbo charger lol or a snails shell idk xD
Example in speakers you often want stiffer materials for tweeters and less so for woofers, while keeping density high for woofers and low for tweeters.
While I do think that the DD and tuning (damping, shell structrure/shape) matters more, material is still a big factor.
Qcy, the t13 anc2 model. I did a evaluation here if you want to read. For the price Its a must have if you own android(eq). For ios users that can’t eq i dont recomend it.
Absolutely! fit makes or breaks the experience with buds. A slight angle or the right tips can totally change the seal, comfort, and how the bass hits ( for bass i try to stick them as close as i can). Foams especially can help lock in that sweet spot. ofc its not gon be IEM level but some of them really hit it!