Does anybody make an open headphone with a snap on cover one can use when more isolation is required?
Dual mode open/closed headphones?
Beyerdynamic makes the COPs (Custom One Pros) headphones, only 16-Ohm, great for use with portable audio.
They come with small bass ports, the ports come with 4 settings.
I'm guessing it's not easy to design a headphone that sounds good both open and closed.
I think it would be great if you could design and sell one that could.