The Pyle PT272AUBT Wireless Bluetooth 300W 2 Channel Power Amplifier in black is a versatile audio device that offers a powerful 300W output. With Bluetooth connectivity, this amplifier allows for easy wireless streaming of audio. It also features two channels and inputs, as well as audio outputs for a subwoofer and DIN connections for compatibility with a variety of audio devices. The remote control offers convenient operation from a distance, making it a great addition to any home audio setup. Missing volume knob. See pics