Originally Posted by: Rob_Wtook the amp to Guitar Center where they were unable to dublicate the buzzing.

Which begs the question, A. do you only have a single electric guitar, and if so B. did you take it along to GC so they could test your specific complete rig config when they attempted to reproduce the fault?

I concur with other posters who infer that if GC couldn't replicate the fault otherwise, it's something specific to your config or location. Old or possibly faulty wiring dirty mains power, out of spec amp PSU, unwanted EMF from some other source, or perhaps just the PUPs/pots in your guitar?

Copied you've already tried different instrument cables. IME cheapies with questionable 'shielding', especially the moulded end ones supplied accompanying "in all in the box" starter packs, can be a cause of induced noise.

Also IME inexpensive pickups &/or pots in cheaper guitars can produce static noise when gain or volume are high which won't occur with good quality more expensive electronics. e.g. My cheapier TL-100 'Tele' clone's weaker default (probably ceramic) PUPs become are noticably statically noisy when the (guitar's) volume pot is rotated to high.My much more expensive Cort Classic TC's PUPs 'n pots and those in my Pacificas aren't.