General description Kentiger HY-400 Hi-Fi Car Stereo Amplifier is designed for both auto and motorcycle use, featuring a sleek aluminum alloy body and a vibrant red color. It allows users to play MP3 music directly from a U disk or SD/MMC card and supports FM stereo radio. The amplifier is equipped with high-power professional power amplifier ICs, ensuring minimal distortion while delivering high power output. Technical specifications Input voltage: 12V DC Frequency response: 20Hz - 20KHz Harmonic distortion: 0.05% and less (4W 1KHz) Signal-to-noise ratio: 85dB High control: 12dB Bass control: 12dB Signal level: 220MV 47K FM frequency response: 87.5 - 108MHz Power output: 20W x 2 Product size: 15.5 x 8.5 x 4 cm Compatibility and accessories Compatible with U disk and SD/MMC cards for music playback Package includes: 1 x Power Amplifier - 400, 1 x Remote Control, 1 x English User Manual