AutumnFall&reg; 700W 12V Mini Hi-Fi Stereo Digital Amplifier mp3 iPod home + Power + Audio Cable Acrylic RCA Input ,Can be plug in with Ipod,MP3/MP4 Mini size easy to installation by DIY without manual, especially good fit for car, motorcycle bike,boat, every where! It has Blue LED light ring round Volume Knob;Bass/Treble tuning. Pre-professional level input operational amplifier IC for circuit design, sound , transparent,bright. Aluminum alloy solid case and also easy to distribute the heat.