With the Pioneer DEH-1900UB, there's always a way to listen to your music collection. This car radio has inputs for CDs, AUX cables, and USB devices. You can connect an Android device to the USB input and charge the device automatically while listening to music. At the back, you'll find an RCA output to which you can connect a subwoofer or amplifier. With the subwoofer, you can listen to a powerful bass sound, while the amplifier provides your speakers with extra power.