Uneven length RCA signal cable

Maybe. But not because of the length being different. While a CM is not a very big difference, its very unusual to see cable lengths off like that, especially for a well respected company like Audience. Someone probably had a really long pair that was not easy to sell, so they chopped them up and reterminated. I would look the cables over really well and see if they show signs of being worked on.

"05-30-15: Rockness87
They are being reterminated by audience for the "e" upgrade..or at least they seem.."

If you sent them to Audience to be re-terminated, then you should be able to disregard my first post.