For many years we have just been making making custom headphones for people form our own new stock. Now, since we have started a “send in” service, by far and away the most popular one that people want modded is the beyerdynamic tesla range. I suspect it is because they are unusual in the high end market for not having a detachable cable.
We can fit a miniXLR to make the cable detachable and also re-wire them to balanced mode or any other mods that you fancy.
We have two pairs of T1s in this week for re-cableing so I will try to add pictures of the opperation