I am using all balanced Earth interconnects except that the TT to phono preamp is RCA. I upgraded from the AQ CV-8 to the William Tell zero full range and found this to improve pretty much every aspect of the presentation. MD took back the 6 month old CV-8 for full credit toward the upgraded cables. They did the same when I upgraded interconnects. I stopped at the WTZero because this was the inflection point in the AQ lineup, after which they transition to much costlier silver conductors.
I’m guessing that you are streaming and not listening to vinyl. My greatest improvement in sound came with power conditioning and power cables. My greatest improvement in female voice came with major DAC upgrade and phono preamp/TT/arm/ cartridge upgrade. Currently, my streamer is most likely the only weakness in my system..but it takes $$$ to find out if this is true.