As the RCA sockets are insulated from chassis, if a preamp PCB without onboard PSU, but layout already connected the signal ground and voltage input ground together, do I still need to have gounding the signal at sockets, to chassis directly or maybe via a small cap? Or, I only need to ground the power ground, to chassis or the mains earth from the outboard PSUr??
AndrewT said:is it mains powered?
and is it connected to mains powered equipment?
yes
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