Four things matter in a power cable:
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Proper shielding to control EMI/RFI.
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A grounded shield, typically at the source end (outlet).
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Adequate gauge — 12 AWG or larger for high current power / integrated amps, and at least 14 AWG for other components.
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Conductors made from materials with good conductivity.
Please let me know if I’ve missed anything, especially something that could affect sound quality. Power cables that meet these requirements can be found at very reasonable prices in the $50–$80 range. I’ve used WAudio 10 AWG, Pangea AC-14 (14 AWG), and Emotiva XIEC 12 AWG — all solid options that won’t break the bank.

