Features 1、【High-Power Output & Flexible Bridging】: Designed to drive powerful audio systems, this amplifier board delivers a maximum of 600W in bridged mode and 300W per channel in stereo mode (dual channels). The intuitive bridging feature simplifies configuration for applications requiring substantial power output. 2、【Heat Dissipation & Intelligent Protections】: Equipped with a temperature-controlled fan and an oversized heatsink, the board ensures optimal thermal regulation, preventing overheating during intense usage. Integrated intelligent MCU popsound function and supports under-voltage, overheat, overcurrent, and short circuits protective functions, ensuring reliable operation. 3、【Premium Component for Superior Sound Quality】: Utilizing high-end elements, such as 3pcs JRC2068 operational amplifiers, solid electrolytic capacitors, and fever-level electrolytic capacitors, the board provides a rich, clear sound with minimal distortion. The custom digital amplifier inductors are designed for low magnetic loss and small parasitic capacitance, enhancing audio fidelity. 4、【Versatile Power Compatibility & Adjustable Gain】: Compatible with 18-50VDC voltage, the board can accommodate various powersupply configurations, making it adaptable for different setups. The gain can be finely tuned between 26-36dB via a potentiometer, allowing users to adjust the output level to meet different requirements. 5、【User-Friendly Design & Robust Connectivity】: The board features a simple yet comprehensive control panel, including ten levels of volumes adjustable function, a power bridging switch, and a 2.54mm pin-spacing 3-pin audio input connector. Its compact size and lightweight design make it easy to integrate into existing audio systems, while the windowed printed circuit board and back panel improve heat dissipation and aesthetics. Specification Name: Amplifier Board Material: printed circuit board Adaptable powersupply: 18-50VDC, limit 53V. recommended to use direct current powersupply with voltage 36-48V and current 10A or above. The higher the voltage, the higher the output power. Applicable speakers: 3-8 ohms in BTL dual-channel mode, 50-300W; 2-8 ohms in PBTL mono mode, 100-600W Cooling mode: temperature-controlled automatic air-cooling or manually selecting the fan to keep turning Gain selection: potentiometer 10-gear adjustment, 26dB-36dB Bridging mode: power off first, 1 dip switch to ON position, output R+L+ shorted parallel output, R-L- shorted parallel output Maximum power: BTL mode, 2*300W@50V 4Ω, 160W@50V 8Ω; PBTL mode, 600W@50V 20, 300W@50V 40,160W@50V 8Ω Item size: 125 * 65 * 38mm / 4.92 * 2.56 * 1.50in Item weight: 254g / 8.96ounce Package size: 155 * 95 * 50mm / 6.10 * 3.94 * 1.97in Package weight: 289g / 10.19ounce Package List Packing List: 1 * Amplifier Board