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There is no logic, reason, or justifictation for not using spades on power cables and in fact use of such terminations can insure a proper connection, contact, and conduction."
You are just adding one more, unnecessary, connection point to the chain. Spades can come loose or break. Speaker cables yes, A/C power cords no, there is no need and no benefit.
You are just adding one more, unnecessary, connection point to the chain. Spades can come loose or break. Speaker cables yes, A/C power cords no, there is no need and no benefit.