I contacted Cambridge Audio and asked about the minor noise that my DM+ makes when power is turned on. They aswered that DM+ should not make any "electrical hums" and should be as quiet as the old DM.   So based on Cambridge Audios answer and the fact that old Dacmagic is totally quiet, the...

My DM+ does a slight noise when power is turned on. I would describe it as a minor electric humming. I did try my old DM again and noticed that it is totally quiet when power is turned on. I would say that the slight noice of DM+ is not loud. For example my PS3 which is next to DM+ makes more...