1.Professional Design for Easy Installation: Our pure rear stage digital power amp board boasts a professional-grade design, simplifying the installation process and ensuring a seamless setup experience. 2.One-Click Bridging Capability: This pure rear stage digital power amplifier board features one-click bridging, supporting up to 200W, providing you with an enhanced power output for superior audio performance. 3.MCU Smart Anti- Sound Feature: Equipped with intelligent MCU technology, the pure rear stage digital amplifier board effectively prevents unwanted sounds, offering you a smooth and uninterrupted listening experience. 4.Dual 100W+100W Output Channels: Featuring dual channel outputs of 100W+100W, this amplifier board provides powerful sound amplification, ensuring your audio is rich, clear, and immersive. Adaptive power supply: working voltage range: 10-30VDC, limit voltage 31V. It is recommended to use a DC power supply of 24-30V, 10A and above. The higher the voltage, the greater the output power. Do not connect to an AC power supply, otherwise it burn out! Applicable speakers: 3-8 ohms, 20-100W in BTL dual-channel mode; 2-8 ohms, 50-200W in PBTL mono mode Cooling method: multi-tooth heat sink Gain selection: second-position dip button second gear selection, 28dB, 38dB Bridging method: turn off the power first, turn the dip button to the ON position, output R+L+ short-circuit output, R-L- short-circuit output. Maximum power: In BTL mode, 2 x 70W 24V 4, 2 x 100W 30V 4; in PBTL mode, 150W 30V 3, 200W 30V 2, 110W 30V 4 Protection mechanism: input undervoltage, overheating, overcurrent, short circuit protection. Input anti-reverse connection protection Maximum power per channel: 100W Color: As Shown Material: Electronic Component Package Contents: 1 x Amplifier Board 1 x Audio Cable 1 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.