Had a few people ask:
The reason for this stuff is to provide a common, star-ground between (ideally) all of your equipment (the white wires in this case) back to Earth via a high-impedance (safe, current-limited) connection (the bright yellow ESD plug).
An alternative approach uses isolation transformers to remove all direct electrical connections. This also works, but unless you use some pretty expensive tx, it comes at a readily-noticeable cost to overall resolution, and of course can change relative impedances, also affecting SQ…
Here, we’re primarily trying to ameliorate possible ground-loops between system components by providing a common, low impedance ground connection between everything. Buzzes and hums often come from ground planes which sit at different potentials relative to one-another, and which attempt to equilibriate by following circuits (e.g. signal pathways) not intended for them. When that happens, you hear it. This is a simplification, and there are many, many exceptions and complications…
You can (and IMHO, should) include your TT, step-up and phonostage in this LOOM - both to help with noise issues and because it can really help dissipate static buildup.
NB: Any old bit of wire will do - you don’t need me to provide the wilfully overspecced stuff I have here, it’s just convenient. If you want to DIY, just grab some 16 to 24AWG kit wire, strip the ends, and twist them around casework screws and plug binding posts.
NB2: I can’t promise this will cure your hum/buzz problems - there are a fair few reasons why you may have noise issues.
If you wish to return the stuff and get a refund - tough. Cry me a river.
Any Questions - please post ITT, so I don’t have to answer the same Q 20 times via PM. Ta.