I have been embarrassingly owned by this issue...I have spent quite a bit of money since December and have "bought into" the need for spike protection but moreso the line conditioning...I think I have rather clean electricity but I have heard noises when some things run in the house (paper shredder, fridge) and I don't hear it through the components running through the Panamax MAX 5100...there are probably better units out there but I did make the $200+ "insurance" purchase twice...piece of mind...anyway...my .02
Bill
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Outlaw 1070***3 Klipsch Heresy ll Mains**Klipsch KLF-C7 Center***Klipsch KSP-S6 Rears***Oppo BDP-83***Outlaw LFM-1 Plus***
Nakamichi TA-3A Stereo Tuner Amp***Klipsch RB-5s***Outlaw Audio M8***

...Let the Movies and Music Play...