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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: An MIT Wonk Boils It DownPosted by Paul S on: 11/15/2020
Here's a decent attempt to boil down basic "ground" issues. Generally speaking, according to best practices, grounding one's hi-fi is a systematic attempt to equalize the ground potential throughout the system at "zero". Again, phono stages are harder to deal with because of their high sensitivity combined with high gain. Include the cartridge, arm wiring, SUT and IC when considering the phono stage. My initial thought is that the PP changes the ground resistance for the phono stage, and that change is audible. Whether the change is a loop or just increasing resistance to where current "backs up" is for you to determine.
https://web.mit.edu/jhawk/tmp/p/EST016_Ground_Loops_handout.pdf
Hope this helps.
Best regards,
Paul SRerurn to Romy the Cat's Site