Jasonbourne52: Yes I do remember the Diskwasher Gold Ends. They were my first upgraded IC that I purchased in the early 80’s. I hand an inexpensive phono preamp at the time and it was very noisy. When I switched to the Gold Ends the noise floor drop significantly. I’m a firm believer that good cables make an audio system sound better. At least your not spending money on cables.
OP: I don’t think of cables as tone controls. The cable better preform at all frequencies. It could be your room acoustics causing frequencies anomalies.
Always buy the best audio equipment you can afford and you should be satisfied.
Lots of good to great cables out there.
Joe Nies