NAD T585 and M55 Universal Players

Are these units essentially the same machines just in a different chassis? Has anyone ever auditioned one to the other ? I have read the specs on both machines at nadelectronics.com and there almost word for word. This leads me to believe they are one in the same with the exception of the chassis. I know chassis design will effect performance but so will a piece of 3/4" MDF and some Vibrapods. I must admit the M55 looks great Any insight would be greatly appreciated. Thanks