Most headphone pads and headbands do but I don’t think that anything on the inside ages enough to be noticeable. One of my main pair of headphones is almost 55 years old (1969 akg k60s) and they don’t have any problems, they still sound good! So I think that as long as you don’t break them, the pads look fine and there is no weird foam or other they will sound pretty similar to how they did when they were made maybe some small difference in sensitivity or something.
Most headphone pads and headbands do but I don’t think that anything on the inside ages enough to be noticeable. One of my main pair of headphones is almost 55 years old (1969 akg k60s) and they don’t have any problems, they still sound good! So I think that as long as you don’t break them, the pads look fine and there is no weird foam or other they will sound pretty similar to how they did when they were made maybe some small difference in sensitivity or something.