Features:

1.Built-in loudspeaker protection circuit triggers when the amplifier is turned on to protect speakers from high volume bursts of audio. 
2.Over-voltage protection circuit shuts down amplifier should input voltage exceed 14.4V DC. 
3.Mini size easy to installation by DIY without manual, especially good fit for car, motorcycle ,bike,boat, every where!
4.Support AUX stereo audio Input ,Can be plug in with CD,DVD,PC,MP3/MP4,digital music player. 
Package Included:
1 x LP-2020A+ Amplifier Black
1 x Power adapter