Now a thought crossed my mind.
Perhaps we are being unfair to Sennheiser.
Perhaps Sennheiser is aware that their old dynamic products from the HD6...HD8... series have already reached the TOTL peak.
Maybe in these affordable price ranges (unless the unlimited amount is HE-1) it is not possible to obtain physically from the current raw materials, a technically faithful transmission of music, a more comfortable product, maybe a slightly more modern design - but nothing more.
While waiting for new headphone premieres, what else can really surprise us, what can our brains and ears still hear that we can't hear right now?
Let's be honest, in the case of other manufacturers of full headphones (dynamic, planar), for several years the changes have also been small, cosmetic and certainly not revolutionary.
Are current headphones better than the Sony MDR-R10 (1989)?
Are you just trying to imitate them or equal their quality?
This is just my opinion, do you also feel this way sometimes?
Sennheiser didn't announce a new flagship because it's impossible to get better than what we already have (that's ludicrous). They didn't announce one because it's not possible for them to do any better than they've already done.
They're a shell of their former selves.