Okay it was doing it again this evening. I rearranged everything, and no luck. This evening it is fluctuating in its buzz/hum, but unlike before the line conditioner is not displaying any voltage irregularities. It'll have 5 seconds of buzz and then 30 seconds with barely audible or no buzz. I basically have one 2-plug outlet in this corner with what appears to me to be downstream from one light and my computer stuff. Here is what I have done.
- line conditioner unplugged
- line conditioner plugged in downstream from amp (with and without amp on a power strip)
- line conditioner plugged in upstream from amp
(with and without amp on a power strip)
- amp plugged into line conditioner
- unplugged computer system
- turned off upstream light
- unplugged satellite cable from wall
- used cheater adapter on amp

All of these different variations had no effect. Any ideas? Am I just stuck with it like this? I mean, it is not horrible, but I do notice it.