A CD player needs power to pump up the volume to a level it can be heard. Although the headphone jack on a CD player provides a small electrical charge sufficient to drive a headset for private listening, an amplifier (AMP) must be hooked up to use full-size speakers. The amplifier connects to a CD player using a standard set of audio cables equipped with 1/4-inch jacks on each end. Setting up the components takes less than a minute. Writer Bio
