Built-in amplifier (25 watts RMS CTA-2006/50 peak x 4 channels). Built-in Bluetooth for music streaming (will not make calls). 2.3 dot matrix display. Fits into a standard 3 gauge opening. Inputs: rear USB port, rear aux input (RCA). Outputs: 4-channel preamp outputs (2-volt front and selectable rear/sub). Compatible with optional wired remotes. Other Features and Specs. IPX-6 front panel for excellent water resistance. Scratch-resistant display with tempered glass screen. Element Ready design for protection against water, dust, and UV rays. Frequency response: 20-20,000 Hz. Dimensions: 4-1/2″W x 4-1/4″H x 2-15/16D. Cutout diameter: 2.975. What’s in the box. Marine digital media receiver. Written by Crutchfield’s Jon Paul. Easy to use, easy to read. You don’t need a full-sized receiver to enjoy a full suite of features on your boat or ATV. Rockford Fosgate’s PMX-1 digital media receiver gives you lots of entertainment options in a remarkably compact package that fits into a standard 3 gauge opening and is designed for marine and outdoor use. Built-in Bluetooth and more. The PMX-1 offers all the functionality you’d expect from a digital media receiver, including built-in Bluetooth connectivity. This receiver works with Apple® or AndroidT smartphones to let you enjoy downloaded music via Bluetooth, and the 2.3 dot-matrix display is easy to read, even in bright sunlight. Built tough for outdoor use. This Element ReadyT receiver is made for marine and off-road use, with a durable front panel that stands up to moisture, dust, and broiling sunlight. Backlit control buttons make it easy to choose the right tunes for a midnight cruise. The PMX-1 is perfect for smaller boats and any dash panel where space is tight.