This device can give you high quality Sound, it can use in Home, Car, Motorcycle, Van, Boat, Everywhere ! Just insert a SD card or USB memory stick, either connect your mobile phone(MP3 files) with USB cable, you can hear the powerful and crystal clear sound with MP3 from this cute little player!! ( You need to connect speakers and DC12-14V power supply for play it! the power supply not included in this link) Hi Fi Stereo Amplifier with build in FM stereo radio for Car , Bike, Boat Marine The AMP can be also used with ipod or other MP3! WHY will you like it? 1. RCA Input , can be also input from ipod or other MP3 with 3.5mm -->RCA cable! 2. Mini size easy to installation by DIY, especially good fit for Car , Bike, Boat Marine! 3. It works with Microphone Mixer, Karaoke as well! 4. Build-in high sensitive FM receiver to joy music. 5. Remote control up to 6M distance between player; all function advisable even volume control in RCA mode 6.The number buttons on remote control panel can be direct search to the music track, it also play the music track randomly or one/all repeat Technical specification: - Out-Put Power :4X100Watts (Peak Music Power) - In Put Power: 12V 3-8A DC (5.5mm outlet/ 2.1mm centre hole jack) - Input Sensitivity:200mV - Input Impedance:47K - Frequency response:20Hz-20KHz - Speaker Impedance:4-16 ohm - Minimum THD <0.05% - Signal/Noise Ratio >100dB(line in) 60dB(MP3) - Red LED display for volume level/ music tracks number/EQ mode/FM frequency... - Tone Control with BASS and Treble / Volume Control - FM receiver frequency 88MHz-108MHz auto scan with memory pre set - Aluminum alloy case good for sinking heat !