I used to have same issue, went out and got a good wall outlet ground checking device. it turns out my wall ground came loose, and many others around the house. Got it fixed, and the hum went away. Also, a good AC conditioner helps.
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Do preamp processors produce a slight hum .
I have unhooked quite a few things from my audio rack but the last thing was a VCR/DVD recorder not being used. I run a Comcast cable thru a Panamax surge conditioner than thru a mondial magic box then to cable box than to a old 40 tube tv.I have noticed a slight hum if you stand very Very close to unit,the processor is a 15 year old acurus act3. I have never paid any attention to this before. The only thing I have hooked up is a 5 Channel
Rotel amp, and a blu ray also in the panamax next week I will be replacing the acurus with a rotel 1068 processor so I hope I will not have any problems. I suspect this is probably normal but would like some advice from someone more
Knowledgable. Slight hum is When all equipment is off in a very quiet room and wondering is this going to happen with the rotel. Thank you
Rotel amp, and a blu ray also in the panamax next week I will be replacing the acurus with a rotel 1068 processor so I hope I will not have any problems. I suspect this is probably normal but would like some advice from someone more
Knowledgable. Slight hum is When all equipment is off in a very quiet room and wondering is this going to happen with the rotel. Thank you