I discovered that the inexpensive ($30) Valab / Aucharm silver plated copper cables made a difference. Blacker background and ever so slightly improved sound stage. Surprised that there was a difference but there was
I'm not surprised at all, based upon my own experience.
A few years ago I bought a nice USB reclocker combo (Uptone Regen Amber, a big beefy SBooster BOTW power supply, and a Curious Cables 200mm long 'Regen Link' USB cable.
I had every intention of keeping the Uptone Regen and reverting back to the original power supply, and selling the SBooster PSU and Curious Cables USB cable to make this a 'cost neutral' purchase.
The PSU definitely improved the sound over the original Meanwell switchmode unit, so it stayed.
I then compared the Curious Cables USB to a few generic USB cables, the original short stubby USB A to B connector that comes with the Uptone Regen, my own DIY USB cable (with solid silver conductors and separate data/power runs) and the Curious cable.
To my wallet's disappointment, the Curious cable did something to the sound that I just couldn't walk away from. To my ears, there was certainly a difference. Not 'night and day', of course, but repeatable and audible. The difference was less obvious than the difference between certain RCA interconnects though.
The Curious cable has stayed put.
As always, when it comes to audio, each to their own.