Short in my system?

I keep getting shocked when walk across the room to touch the system, which then pops really loud through the speakers. 

I have a McIntosh 352 tube amp plugged into a Niagara 1200 power conditioner, which is really like a giant surge protector. 

I live in cental NC, and wSo I don't know if theres an electical problem with the house or with the system, or if this just happens sometimes.  It also happens sometimes when I touch the floor lamp, just a static spark.  Its just so much worse when I touch the amp because its amplified so loud and I'm afraid its going to short out the whole system, or at least blow some tubes.hile its been a cold dry winter, I live on a lake and it rained a couple of days ago so I don't think its the dry weather.