KAWACHI MA-D40 USB SD FM Radio MP3 MIC Mixer Player 4CH Power Amplifier Remote Build-in high sensitive FM receiver to joy music. It works with Microphone Mixer, Karaoke as well! Mini size easy to installation by DIY, especially good fit for Car , Bike, Boat Marine! RCA Input , can be also input from ipod or other MP3 with 3.5mm --&gt;RCA cable! Remote control up to 6M distance between player; all function advisable even volume control in RCA mode