Planning a whole-house audio system? The Niles SI-1230 Series 2 multi-channel power amplifier. You can customize this powerful 12-channel amp to best suit your specific multi-room setup. Enjoy warm stereo sound in six rooms, or combine two channels into one to give your speakers more juice - a great option for power-hungry outdoor speakers. Use a single channel of power for mono sound in smaller listening areas, like a closet or bathroom.