This 2-4 channel small Bluetooth multi-home audio system equipped with micro USB/TF can power 2 to 8 pieces of speakers in your home or small commercial area. It uses a high- efficiency class-D amplifier for a maximum output of 2*25 or 4*25 watts, low-impedance speakers. The cool display shows relevant track music info. Plus, you can control everything -seek, change tracks, and adjust the volume – using the included wireless infrared remote controller.