The LA15C acoustic amplifiers delivers a natural acoustic sound to complement your acoustic instrument. Simple-to-use and compact amplifier combo designed specifically for acoustic instruments. 3 band EQ for tone shaping plus a Shape switch - this provides a great sounding �go to� setting from a single button press. AUX input allows for connection of a playback device such as MP3/iPod/CD for backing tracks, plus a headphone socket for doing so quietly -a great feature for private practice or late night sessions.