I have been involved with being an invited assessor of a Tonearm as it has been through a few updated design stages and very similar for a new designed Phonostage, both produced by the same designer builder.
The most recent changes has been on the Signal Path and a rethink for signal wire and connections have been worked with.
The use of Low Eddy, Chassis Mounted and Cable RCA's has shown a noteable improvement in the SQ, the Cable that was also used without the Low Eddy connectors was 9 changing the presentation in a manner being perceived as unattractive.
I do think the Chassis and Cable Connectors need to be considered as a combined change, when discussing connectors.