power cables' effect on power conditioner?

If your Audience PC is 10 gauge, it’s worth trying on the power conditioner. It has a low noise floor, but I wouldn’t call Audience a neutral sounding sounding cable.

Completely agree with @steakster.
Each PC in the chain has an effect on overall sonics.

Regarding power conditioners and amplifiers, make sure you choose a unit that is non-current limiting. IOW, a unit that does not affect the sonics or dynamics of a high current component.

@emailists , it was my understanding that steel shielded cable should not be used in audio applications. The link you provided states the use of this cable is for...

"Branch circuit and feeder wiring for computers, programmable controllers, electronic discharge lighting, office machines and other electronic equipment that introduce additive harmonic currents from non-linear switching loads"

Maybe you can enlighten me as to why this cable would be superior to 10 gauge Romex. 
I thought BX type cable and metal conduit should not be used from circuit panel to audio system.

@emailists , I'm not an electrician or an EE. I think the issue with a steel shield or steel conduit is that it should never
touch the ground wire of the dedicated line or become grounded to the destination. eg, the circuit panel ground buss or a steel receptacle box.

If you are not consulting with an electrician, you could start a new thread about your dedicated line. Many  experts on the forum will respond.

https://www.southwire.com/commercial/metalCladCables.htm

This is from the company who makes Romex. Typically used in a commercial installation.
You could post your question about the best way to run your line and also ask about VH audio Cryo treated Romex.