The Monster device looks interesting, but I'm a bit wary about trusting a testing device that doesn't come with a shielded power cord (or simply runs on DC via battery).
I would suggest that if the noise is not audible, then it isn’t likely to have an affect on sound quality and especially enjoyment of the presentation. If this is the case, why would ‘knowing’ of any noise matter?…
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.