Use A Power Strip or a Smart Power Strip
Using a power strip to turn off electronics and appliances when they aren't in use ensures that they are truly off and not using extra electricity.
A smart power strip (also called a smart power bar) looks similar to a traditional power strip, however circuitry is designed to monitor and control power to each electrical outlet in the strip to improve energy efficiency and prevent household electronics from wasting power.
A smart power strip will turn off power to all appliances and electronics plugged into the strip automatically, when you turn off the primary appliance or electronic device. For example, turning off the TV with you remote will cause the smart power strip to turn off power to your speaker system, DVD player, any other device you use with your TV.