Modifying the AKG K702 to take a balanced connection

We spend a lot of our time modifying headphones to take a balanced connection from and am or DAP – it think this is the first pair a AKG K702 we can done. We were lucky enough to have a 4pin socket just the right size to fit in the original hole. Here is a handy video of the operation which may help if you fancy doing a bit of DIY or if you would like us to perform a similar operation on your headphones just let us know