This amplifier has a single 1/4" jack socket, and controls for gain, bass, mid, treble. On the rear of the unit there is a headphone 1/4" jack socket and the ability to connect an external music source (such as a CD player) is provided by a pair of phono sockets. There are another pair of phono sockets for line out audio. The amplifier is rated at 15W and has a 8 Ohm speaker.