1High Stability: DSP power amplifier supports 2/4 ohm stable operation, ensuring a stable sound output regardless of volume levels, allowing you to enjoy clear sound consistently. 2Reduce Noise: Car amplifier utilizes A/B class amplification technology, resulting in purer sound quality with a 96dB signal to noise ratio to reduce noise interference and restore music to its original form. 3Easy Installation: The compact size of the amplifier makes it easy to install in a car sound system without requiring any specialized expertise, making it convenient for DIY installations or professional setups. 4High and Low Tone Adjustment: The power amplifier offers bass adjustment range of 50Hz to 300Hz, treble adjustment range of 1kHz to 20kHz, and 12dB to 12dB volume adjustment range for fine tuning of sound output. 5Output Power: With 4 channels of 50W rated power and 4 channels of 60W maximum power, the car amplifier delivers powerful and clear sound output for an immersive listening experience on the go. 1 x DSP Amplifier 1 x Wiring Harness 1 x Instruction Manual