I am very happy with a Panamax 5300 to filter power to my McIntosh tuner, preamp, amp, and CD player. It also filters the power on my 32" Sony TV/Monitor and my Panasonic DVD recorder. I would suggest a modest upgrade, however, and chuck the stock power cord and get an upgrade - possibly a PS or similar.
Great quality and my audio system is dead quiet unless some audio is playing. TV picture always clear and clean - unless Comcast screws up with a bad signal on one or more of their channels. DVD recordings are very crisp and clear.