Call me a masochist, but I've got 4 AJBR's and they all have noise - from a high pitch whine from the hard drive to just a general annoying hiss.
I bought a pair of Westone UM1's and the noise is even worse, probably due to using better quality cans.
Even though the AJBR's are a brick, it's the only thing that annoys me about them.
Cheers,
c0utta