iFixit published a tear down of the AirPods Max and it reveals, among other things, that the headband could be interchangeable.
It was rumored that Apple wanted to design the AirPods Max headband to be easily-swappable like its magnetic ear cups. That feature was thought to be missing from the final design, but this joint is so complex it just might have one more thing up its sleeve…despite the joint’s complexity, you can detach the entire headband from AirPods Max with just a SIM card removal tool or paperclip, without even opening the ear cup.
Check It Out: AirPods Max Headbands Could be Interchangeable