Profile updated, I do have a Monster Power 2600 for most of my gear. The TV, PS3, Toshiba HD DVD player, Wii and the Sub are all connected to a Monster Power bar 1100 I believe on a different outlet, same 20 amp circuit as the rest of the stuff.

Thanks for the troubleshooting suggestions. I will be trying to find the culprit soon. I believe the Marantz AVP does not have a grounding plug, its a 2 pronger only.

The weird part is everything was fine, it was sounding great and then while it was on the hum started. frown


Edited by cp1966 (11/07/12 04:41 PM)
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Panasonic TC-P65S1 65" Plasma HDTV, Marantz AV 8801 Preamp, Outlaw 7700 Amp, Klipsch RF7 (X-over dean G modded) RC7 (X-over Dean G modded) RS7 CDT-5800C speakers, Outlaw LFM1 EX Subwoofer, Oppo BDP-93, B & O Turntable, Toshiba HD-A2, Sony CD & DVD 400 disc jukeboxes, DirecTV HD-DVR, PS2, PS3, Wii, Harmony one remote, Monster PowerBar 1200 for the TV, sub, PS3, HD DVD and Wii, Tripp Lite Isolation Bar for the Amp, Pre-Amp and other sources.