After more than 13 years of near daily use, the old plastic that holds has started to show it's age and cracked, the audio is still good and I love these headphones, so I model this up rather than designating this to the trashbin. This may or may not fit other models in the ATH-A(D) series of headphones, but I can only confirm this works on the Audio-Technica ATH-A700 that I own.
This Audio-Technica ATH-A700 Earpad Holder fits either left or right side, the wire channel is slightly wider than the original to account for tolerances of various 3d printers, since that's a very narrow slot. The wire was originally held on with glue, which I don't recommend for repair-ability purposes, but if you are going to go the route of replacing these, you will have to desolder the wires anyway, so it can be replaced with thicker gauge wire, if desired.
Printed in PLA, but I recommend this to be printed in a more ductile material like PETG and as many walls as you can. Print with supports enabled.
The author marked this model as their own original creation.