Depends on the power cord. Traditional power cord theory says to put your best cord on your power conditioner.t.
However, if you are using an HFC cord, it's best to put it on source firs
Let me rephrase. If using an HFC powercord and all your gear is on the output side of the power conditioner, where is the HFC cord best used? On the input to the whole system into the power conditioner, or one of the outputs to one of the source components?