Several other customers have also commented on the grounding issue. Looks like they drilled a hole in the painted sheet metal cover and put in a captive screw to act as a ground rod. The very slight wobble of this screw tells me that no other material holding it leaves a ground on the tin case that doesn't appear to be grounded to the ground circuit/PCB of the RCA connectors. one of the cinch inputs, I really wanted to listen to my records. It still hums at best, but at high volume.
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