Cables that make difference in my system: Analog IC (rca / xlr), Speaker cable, Hdmi as I2s, Optical, 75 ohm rca cable, Cat 8 ethernet cable (vs Cat 6)
Cables that do NOT make difference in my system: USB, Power.
*Benchmark Media Systems makes and sells $9 USB A-to-B cables for their gear. Although I do use the DH Labs Mirage USB cable ($280), I could not hear a difference between it and the factory USB cables from Schiit Audio.
I use well-shielded, 10–14 gauge, high-quality copper, beefy yet very affordable ($40–$90) power cables. The quality of the power supply (LPS) and the power conditioner/outlet make a much more meaningful difference than power cables themselves. I congratulate myself for saving money on power cables and putting it toward things that actually make a difference.

