Lepy LP-2020A Hi-Fi Digital Amplifier, Mini Stereo Audio Amplifier with Power Supply Black US 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! Compact Size: 120mm (D) X 147mm (W) X 42mm (H) Tripath TA2020 amplifier chip provides efficient, powerful sound Aluminum alloy solid case and also easy to distribute the heat.