Features： 1、Durable Construction: Crafted from premium aluminum alloy, this car amplifier is built to withstand the rigors of automotive environments while providing long-lasting performance and reliability. 2、Robust Signal Handling: With a signal-to-noise ratio of ≥90db@1W (4 ohms) and a frequency response range of 20Hz-20kHz, this car audio amplifier guarantees impressive sound reproduction across various audio frequencies. 3、High Power Output: Experience unparalleled sound quality with our car amplifier, delivering a maximum output power of 4x47W and 4x35W under 10% distortion, ensuring your car audio amplifier delivers clear and powerful performance. 4、Cooling Design: Designed with large venting slots, this automotive amplifier effectively increases heat dissipation, preventing overheating during extended use and ensuring consistent performance. 5、Easy Installation and Compatibility: This car stereo amplifier is specially designed for most Android car stereo systems, allowing for quick plug-and-play installation without the need for disconnecting existing components. Specification： Item Name: Car Audio Amplifier Main Material: Aluminum Alloy Power Amplifier Class: A/B Input Channels: 4 channels Maximum Stable Load: 2 ohms Signal-to-Noise Ratio: ≥90dB @ 1W (4 ohms) Frequency Response Range: 20Hz-20kHz RCA Signal Output: 4V Product Color: Black Product Size: 14.6*9.5*4.3cm/5.75*3.74*1.69inch Package List： 1 * Amplifier 1 * Wire Harness 2 * Set of Adhesive Tape