Like MannyE, I too, have lots of power conditioners/surge/spike protection.
I special ordered (2) 20 amp 240 volt Panamax ones to protect/filter my (2) 240 volt wired MC 1201`s that are re -fused at 10 amps per factory that are used in my living room system.
They are marked for high current 240 volt industrial laser printers that are prolific power line noise generators, with 12ga in and out pigtails, on which I installed 20 amp/240 volt male and female Hubble plugs and inline female sockets for each amp.
They are very heavy duty devices, and were not inexpensive, and weigh probably close to 5 lbs. ea...
But with the price of the 2 purchased new Mac MC 1201`s @ over $13,000.00, I felt they are very cheap insurance, and do not starve those amps at all..
I can put my ear up to the 2 12" speakers in the Mac XRT-30`s bass cabinets with nothing actively playing, but powered up with my HVAC, air compressor, water heater elements cycling, or 25 kw whole house generator running and hear zero clicks or other noises..
When I e-mail conversed with Mac in late 2003 about their global stance about plugging amps straight into outlets, the gentleman confessed after I pressed him, that the main reason, is a lot of people don`t purchase a high enough current rated, or in my case, over current rated conditioner/surge/spike protector, so the under sized units will starve the amps mains under dynamic and loud music passages.
Not in my case..
YMMD.
Kind regards, OKB