it's probably got SOME noise. even on the better of my two modded DMGs there's a very subtle hiss that you might not notice without headphones and/or really good ears.. i 've had really good hearing for years, so i tend to notice sounds a lot of people might miss.. hell, i used to be able to hear if a CRT tv was on (while just set to an input with nothing in it, so black screen no audio) by the slight hum from 25 feet away through a closed door
Yeah, this! The noise I get isn't audible until I am multi-track recording, but when you hear the tracks in isolation, or as part of an overall mix it is really obvious. Definitely requires a gate to get rid of it.
I feel you on the CRT thing. That high pitched whine used to do my nut in.