After I eventually ditched the BNC/RCA adapters and got my Linn tonearm cable terminated with BNCs I was just a little disappointed to find that the amount of improvement in the sound equalled an absolute zero.
As Shakespeare might have said, it was all a much ado about nothing
This does not surprise me. Many listeners have enjoyed genuinely superb sound quality with audio /digital components utilizing RCA connection. As with all audio matters, it comes down to the level/quality of the implementation. Sonic performance is the real life arbiter.
Charles