I've read the prior threads which speak about direct pc dish based systems having hum when a ground is screwed up or one omitted. I'm having a similar problem with my cable tv receiver into my BAT S300X integrated amp.
I've tried grounding the box to the amp. It cuts down the hum, but doesn't eliminate it. All the electronics have been tried running through a PS AUDIO 600 or into the same outlet or into separate dedicated outlets.
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