1. High power output: capable of providing stable high-power output, usually suitable for driving multiple speakers or high demand audio systems, ensuring clear and undistorted sound. 2. Low distortion rate: Advanced circuit design and high-quality components are used to ensure extremely low distortion during audio signal amplification, restoring the original sound quality. 3. Wide frequency response range: Supports a wide frequency response, covering the audible range of the human ear, enabling accurate transmission of every detail of music and speech. 4. Efficient heat dissipation design: Equipped with an efficient heat dissipation system, including large heat sinks and/or fans, to ensure stable operating temperature even under long-term high-power operation. 5. Multiple protection mechanisms: built-in short circuit protection, overheating protection, overload protection, etc., effectively preventing damage to the amplifier in abnormal situations and extending its service life. Product Name: 300W Dual-Channel/600W Mono Pure Power Amplifier Board Amplifier Chip: TPA3255 Power Supply: Operating voltage range 18-50VDC, maximum 53V. Recommended DC power supply: 36-48V, current 10A or higher. Higher voltage results in higher output power. Speakers Compatible: BTL dual-channel mode 3-8 ohms, 50-300W; PBTL mono mode 2-8 ohms, 100-600W Cooling Method: Temperature-controlled automatic air cooling, or manual selection for continuous fan operation. Volume Adjustment: Stepless adjustment with analog potentiometer and mechanical switch. Bridge Connection: Power off first, switch DIP switch #1 to the ON position, short-circuit R+ and L+ at the output terminals for parallel output, short-circuit R- and L- for parallel output. Maximum Power: In BTL mode, 2*300W@50V 4Ω, 160W@50V 8Ω; in PBTL mode, 600W@50V 2Ω, 300W@50V 4Ω,