Experience powerful and high-fidelity audio performance with this advanced Amplifier Board, engineered to deliver exceptional output and reliable operation. Designed for versatile audio applications, this board supports both stereo and bridged modes, providing 300W per channel in stereo and up to 600W in bridged mono mode. Its robust design ensures compatibility with a wide range of power supplies and speaker impedances, making it ideal for custom audio setups and professional use. Key Features: · High-Power Output & Flexible Bridging: Easily switch between stereo mode (2 x 300W) and bridged mono mode (600W max) to meet your power needs. The intuitive bridging switch allows quick configuration for enhanced audio system performance. · Efficient Heat Dissipation with Intelligent Protections: Equipped with a temperature-controlled fan and an oversized heatsink, this amplifier board maintains optimal thermal performance and prevents overheating. Integrated MCU popsound protection along with under-voltage, overheat, overcurrent, and short circuit safeguards ensure stable and safe operation. · Premium Components for Superior Sound Quality: Incorporates three JRC2068 operational amplifiers, high-grade solid and fever-level electrolytic capacitors, and custom digital amplifier inductors designed for low magnetic loss and minimal parasitic capacitance. These features deliver crystal-clear, rich audio with low distortion. · Wide Voltage Compatibility & Adjustable Gain: Operates on 18-50VDC input voltage (maximum 53V), compatible with various power supply configurations. The built-in 10-level potentiometer allows gain adjustment from 26dB to 36dB for precise output control adapted to different environments. · User-Friendly Design & Robust Connectivity: Features a comprehensive control panel with ten-level volume adjustment, a power bridging switch, and a 3-pin audio input connector with 2.54mm pin spacing. Its compact and lightweight printed circuit board measuring 125 x 65 x 38mm enables easy integration into existing audio systems. The windowed PCB and back panel design promote better heat dissipation and an improved aesthetic appearance. Specifications: · Material: Printed Circuit Board · Compatible Power Supply: DC 18-50V (limit 53V); recommended 36-48V DC with 10A or higher current for optimal performance · Speaker Compatibility: 3-8Ω in BTL dual-channel mode (50-300W); 2-8Ω in PBTL mono mode (100-600W) · Cooling Mode: Temperature-controlled automatic air cooling with manual fan selection · Gain Adjustment: Potentiometer with 10-step adjustment from 26dB to 36dB · Bridging Mode: Activated via dip switch; outputs in parallel shorted configuration for R+L+ and R-L- · Maximum Power Output:  – BTL Mode: 2 x 300W @50V 4Ω, 160W @50V 8Ω  – PBTL Mode: 600W @50V 2Ω, 300W @50V 4Ω, 160W @50V 8Ω · Item Dimensions: 125 x 65 x 38mm (4.92 x 2.56 x 1.50 inches) · Item Weight: 254g (8.96 ounces) Package Includes: · 1 x Amplifier Board This Amplifier Board combines powerful output, high-quality audio components, and intelligent thermal management to deliver an outstanding sound experience. Its versatile design, adjustable gain, and robust protection features make it a dependable choice for audiophiles, DIY enthusiasts, and professional audio system builders seeking reliable and clear audio amplification.