TOA's CA-115 15W Mobile Mixer Amplifier with Microphone is a small mixer/amplifier that can be used for public address and emergency paging. This public address system is powered by a regular 12V battery and delivers 15W into four or eight-Ohm speaker loads. With the provided hardware, this unit can be mounted under a dashboard or into a conventional console cutout. The two microphone inputs each have their own volume settings, while the additional auxiliary input allows you to be a little more creative by allowing you to use mixed media.