I've got a POD XT that's updated to the latest software and this evening while playing a fault occured where the output dial stopped affecting one side of my heaphones, basically the right ear is full volume all the time, and the left one behaving as it should normally with the output dial, I've flashed the device but no change, it does the same with other headphones and speakers so the issue isn't there. Anyone seen this issue before?

Thanks.