(Product Features): Equipped with a professional automotive DSP chip. Built-in Class D digital amplifier with high-power output of 4CH × 50W. Excellent sound quality, supports bass/treble adjustment and EQ tuning. Aluminum alloy heat sink, sturdy and offers excellent heat dissipation. Supports both remote control and knob operation. Features voice prompts. Compact size for easy installation; plug and play. Universal power interface, plugs directly into standard car stereos with a 16-pin connector for a wire-free, plug-and-play installation. Compatibility: Compatible with all car stereos that have a standard 16-pin power plug. Important Note: If you are unsure about compatibility, please take a photo of your stereo's interface for confirmation. (HTML to display interface diagram and PIN definition diagram) (Specifications): Operating Voltage: DC 12V Standby Current: ≤ 1mA Standby Power Consumption: ≤ 0.1W Signal-to-Noise Ratio (SNR): 80dB Separation: 80dB Total Harmonic Distortion (THD): ≤ 0.1% Signal Input Voltage: 14VPP Signal Output Voltage: 25VPP Sampling Frequency: 48K Frequency Response Range: 20Hz - 20kHz Bass Adjustment Range: 50Hz - 300Hz Treble Adjustment Range: 1kHz - 20kHz Volume Adjustment Range: -12dB - +12dB EQ Modes: FLAT / CLASSIC / POP / ROCK / JAZZ / VOCAL BOOST Rated Power: 4CH × 40W Max Power: 4CH × 50W Input Impedance: 4Ω (VS-ON) Output Impedance: 4Ω Dimensions: 90mm (W) × 122mm (L) × 37mm (H) (Package Includes): 1 x Main Unit (Host) 1 x Remote Receiver 1 x Power Cable 1 x Remote Controller 1 x User Manual