The CLASSIC PRO/DCP100 is an ultra-compact Bluetooth power amplifier with a high-quality 50W x 2 Class D amplifier with a compact body that weighs only 2.6 oz (76 g). It has a USB port for connecting to your PC (Windows), a stereo mini port for wired connection with various players, and a headphone jack for various situations. Recommended for playing music in living rooms and stores. The DCP100 is a palm-sized DCP100 equipped with an ultra-compact body with a high-quality 50W x 2 Class D amplifier and a large volume knob for easy operation. In addition to a Bluetooth receiver that connects wirelessly to your smartphone or tablet, it also features a USB port for connecting to a computer (Windows), and a stereo mini port for wired connection with a variety of players, so it is suitable for various situations. Speaker output automatically mute when cable is connected to headphone output, perfect for night use. Comes with a variety of connecting cables to connect with your device or passive speaker for instant enjoyment.