It depends on the conditioner. Many impede current flow to amps(doesn't matter if it's integrated or not). A few of them don't.
Power conditions for Integrated Amps
Anyone using a power conditioner for an integrated? I keep hearing to plug your amp direct into a wall, and use a conditioners for the rest of your equipment. So, what do you use for an integrated? I'd like to hear from actual integrated amp owners mostly. Others are welcomed to chime in of course!