QUAD 606-2 re-wire

Any thoughts on the best cable to re-wire my Quad 606-2? I’d like to keep mains bundles separate from signal runs. I’m particularly exercised over the poor quality of the wiring to the speaker binding posts - clearly OFC wanted, but does it need to be esoteric (ie, expensive)?
Neil
 
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Power amplifiers often have nonlinear currents flowing in the power supply wiring.
The supply wires should all be twisted together (all three in a bipolar supply),
and kept separate from other wiring, because of this.
 
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