I have experimented over the last several years with various wires to use for dedicated 20-amp circuits. I have the following wire in use in no special order:
1) 10 gage Romex
2) 10 gage UV
3) Belden 83802
4) Virtual Dynamics 10 gage BX Cryogenically treated with Cryod circuit breaker. *
To my ears on my revealing system I hear NO difference between (1-4)! I think simply using a dedicated circuit with 10 gage copper makes the biggest difference.
* There might be other positive factors to using cryogenically treated wiring besides sonics. It might lower the operating temperature of equipment.