Opinions on A/C Noise Meter EMI Testers

@jeffseight See if you can find a "Monster Power, Dr. Power", on eBay. Well built and works well, plugs into the AC outlet, and/or hold the unit near potential noise sources to check.

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?…