[stvn758]

Noticing the only difference between the open Ultrasone 2500's and their closed 750 brothers were little holes I wondered has there ever been an adjustible headphone?

You give the main can a twist to open up holes/chambers and give them more or less oomph depending on the music you are listening to.

Should I patent this?

 

[nc8000]

Larry at HeadPhile does something like this with several of his woodies

 

[stvn758]

Oh well that's my Ferrari on hold.

Considering the difference in sound people on here get pulling bits of tape off or adding bigger foam pads modding their cans, seemed like an obvious way to achieve it.