High-Performance Transistors: Equipped with 1943+5200 transistors, this 300W Mono Power Amplifier Board delivers exceptional audio clarity and power, ensuring a high-fidelity sound experience for audiophiles and enthusiasts alike. Wide Voltage Compatibility: Designed to operate efficiently with a DC input range of 30V-90V, this amplifier board is versatile and can be integrated into audio setups without the need for specific voltage conditions. Robust Design and Certification: Crafted from plastic and certified by CE, this amplifier board promises reliability and safety in its operations, making it a choice for your audio amplification needs. Optimal Speaker Driving Capability: Capable of driving speakers up to 15 inches, this amplifier board is ideal for powering large audio systems in events, home theaters, or any space that requires powerful sound output. DIY Friendly with Electrical Supplies: Comes with all necessary electrical , making it easy for hobbyists and professionals to install and customize according to specific audio system configurations. Specifications: Power Supply Voltage: DC 30-90V (optimal range: 30V-75V). Note: Do not exceed the voltage limit, and do not use a switch mode power supply. Output Power: 300W (when connected to an 8 speaker) PCB Board Dimensions: 150mm x 75mm Color: As Shown Material: PCB Package Contents: 1x Power Amplifier Board 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.