I'd have to say it's your receiver. Borrow a preamp (or buy a good used one you can re-sell) and see if the buzz goes away. You can do a thread search for excellent inexpensive preamps. This question has been asked many times.
Also, you can decide whether the Monster is worth having. There are a number of good power strips available. Surge protection is another matter...OneAC, Powervar, Brickwall...all make good surge protector/conditioners that are high quality but inexpensive. Or, you can keep the Monster. :)
Also, you can decide whether the Monster is worth having. There are a number of good power strips available. Surge protection is another matter...OneAC, Powervar, Brickwall...all make good surge protector/conditioners that are high quality but inexpensive. Or, you can keep the Monster. :)

