View larger Switchable US & Europe Tuner Frequencies The 614UA will not only be able to pick up U.S. frequencies but it will also have the capability to pick up European frequencies. Playback MP3 / WMA Built-in Clock View larger Compatible With Audio Output of iPods / iPhones, Smartphones, and MP3 Players You can connect a device that has an Auxiliary output, such as your iPhone/iPod, smartphone, and MP3 player, straight into the Auxiliary input of your head unit. So basically a cable that has (2) 3.5mm audio (male) plugs. Important: Please beware that this feature is not the same as the “Full iPod Control." This feature will only allow you to control your music by clicking on the designated buttons via the face or front side of your unit. View larger RCA Outputs (Left/Right) View larger USB Memory Port View larger Front AUX (Auxiliary) In This little input in the front of the 614UA that says “AUX” is an interface that allows the input of audio signals for MP3 players, headphones, and portable music players. It is for AUDIO ONLY and not video. View larger SD Memory Card Port The SD card port is located directly behind the face plate once it is opened. Output Power: 50 Watts x 4 Channels The 614UA offers 4 channels that can be used to hook up 4 speakers. Typically though, it is a much better practice to have an amplifier running your system.