Power conditioners may not be the hippest component in your home audio system, but they're incredibly necessary for getting the best out of your gear and having your rig sound as good as it can. Household appliances, computers, and other things can contaminate the AC power in your home, degrading the performance of your system. A great power conditioner will filter the AC power hitting your gear and protect it all from damaging AC spikes, extending the life of every component in the room.