Product List: 1 Car Stereo AmplifierSturdy Structure: Car Audio Amplifier measures 32cmx21cmx6cm and is made of solid aluminum alloy material with shockproof performance, ensuring consistent sound quality even during bumpy driving.Stability: Car Audio Amplifier uses multi layer PCB boards, and the parts are fine and solid, providing enhanced performance and stability, making your music experience more reliable.Multiple Protections: Car Audio Amplifier is equipped with two 30A fuses for power short circuit protection, high temperature protection, and automatic response protection to prevent signals short circuits caused by poor output signals lines.4 Ways amplifier: Car Audio Amplifier 4 ways amplifier sound quality is more in line with your needs, with clear and high sound quality. Specification: Voltages: 12V Maximum Power: 7800 Impedance: 4 Sensitivity: 91 Distortion: 0.2 RMS Outpower 4:4x100W RMS Outpower 2:4x150W Bridged Power 4:4x300W THD:Less Than 0.02% Signals to Noise ratio: More Than 96dB Sensitivity:320mV-6V Recommended Fuse Type:20Ax2 Size Chart: 32cmx21cmx6cm/12.60inchx8.27inchx2.36inch Package Includes: 1 Car Audio Amplifier Note: Please allow slightly errors 1-2cm differences due to manual measurement.