Hi all. I am building up my Boozhound Labs Phono preamp kit this coming weekend. I plan on building it into a cigar box that will also get stuffed with a flat pack transformer (15VAC) and a voltage rectifier/regulator pcb (LD1085 regulator). I figured I would need to line the box with some conductive material for shielding so I also picked up some thin adhesive copper to line the box with... RCA jacks will be isolated. Which leaves me wondering... what ground do I connect to the copper shield? Earth ground from a three prong power cable? Or post rectifier common ground?
Is the copper accessible to users of the box? If so, connect it to mains ground as it is a safety ground. Any other external metal (e.g. RCA)?
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