Feature: 1. Compact Design: The vehicle 4 channel power amplifier is equipped with high performance electronic components and features a compact design for easy installation. 2. Multiple Protections: This amp has multiple protection circuits including short circuit, overheat, overvoltage, undervoltage, and direct current output protection. 3. Powerful Output: With a strong power output, it is easy to match with speakers, wide working voltage range (10v‑16v) for wider compatibility. 4. Stable Performance: The pure copper high power transformer and large capacity capacitor provide stable voltage for improved sound quality. 5. Enhanced Heat Dissipation: The amp features multiple porous designs on both sides of the body to greatly improve heat dissipation performance. Specification: Item Type: 4 Channel Car Amplifier Output Power at 2 Ohms: 150Wx4CH Output Power at 4 Ohms: 100Wx4CH Bridge Output Power at 4 Ohms: 320Wx2CH Total Harmonic Distortion: ≤0.05% Frequency Range: 10HZ- 20KHZ Input Sensitivity: 6V-0.1V Signal-to-Noise Ratio: 96dB Impedance: 2/4Ω. Package List: 1 x 4 Channel Car Amplifier 1 x User Manual 8 x Installation Accessory