Should power cords have filters on them?


Everyone say"s you should plug your amps directly into the wall, not a power conditioner so why do they have filters on power cords for amps?I use the Furutech E-TP80 it has no fiters on the amp duplex. I have the Cam 200"s, currently using the Model 11 series II. The Cam"s fuse caps are real close to the IEC connecter,I wonder if Classe knows that!So the power cords with the big round connecters don"t fit.Doesn"t give me many options.Any Advice.Please don"t tell me to sell the Cam"s I do like them!Maybe I just answered my own questions.
gellis1c024
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Viggen, Are you saying that filters don"t help lower the noise floor and maybe its the sheilding?
Best world scenario is if your system doesn't need filters, that's all. Use it if you need it.
Fine caps across the hot and neutral can help, without veiling or dynamic limitations. I use good ones in my PoBoxes, for example, but not on PCs per se.
I have tried ferrite clamps and it did help on my preamp. Still think a good power conditioner is better.