I did a search and I'm still somewhat confused.
I'm interested in purchasing the Momentum headphones, but would also like the flexibility of using a longer cable than the two 1.5 metre cables the headphone comes with.
Reading some other threads it sounds as though the cable for the HD 598 would have to be modified to fit the Momentum. I'd like something that works straight out of the box and is roughly between 2 and 3 metres in length. Is there anything available on the market such as this?