Enhance your audio experience with this high-performance 500W Power Amplifier Board, designed to deliver powerful and clear sound amplification with exceptional efficiency. Crafted from durable PCB and aluminum alloy materials, this amplifier board offers reliable operation and excellent heat dissipation, featuring a built-in cooling fan and aluminum alloy heat sink to maintain optimal temperature during extended use. Key Features: · Powerful 500W Output: Delivers robust audio amplification at ±65V power supply with a 4-ohm load and 10% distortion, ideal for driving 4-8Ω speakers with clear and dynamic sound. · High Input Sensitivity: Supports an input signal sensitivity of 1.5V RMS, ensuring effective amplification of weak audio signals. For input signals below this threshold, the addition of a preamplifier is recommended to achieve optimal performance. · Advanced Protection Mechanisms: Equipped with output short circuit protection, output direct current bias protection (speaker protection), and over-temperature protection, automatically shutting down output if the radiator field effect tube exceeds 100°C to ensure safe and reliable operation. · Superior Heat Dissipation: Integrated cooling fan combined with an aluminum alloy heat sink provides efficient heat management, prolonging the amplifier’s lifespan and maintaining stable performance under heavy loads. · Wide Voltage Compatibility: Rated for dual power supply voltage of ±65V, with normal operation within the range of ±58V to ±70V. Voltages exceeding ±70V may cause damage, so proper power supply regulation is essential. · High Efficiency and Sound Quality: Boasts an efficiency of ≥90% and a signal-to-noise ratio of 90dB, delivering clean and high-fidelity audio across a frequency response range of 20Hz to 20KHz. · Compact and Lightweight Design: Measuring 98 x 43 x 30mm and weighing only 95g, this amplifier board is easy to install and integrate into various audio systems and projects. Specifications: · Material: PCB + Aluminum Alloy · Power Supply Voltage: DC ±58V to ±70V (Rated ±65V) · Rated Output Power: 500W (at ±65V, 4Ω load, 10% distortion) · Efficiency: ≥90% · Signal-to-Noise Ratio: 90dB · Frequency Response: 20Hz – 20KHz · Speaker Impedance: 4-8Ω · Voltage Gain: 36x · Input Sensitivity: 1.5V RMS · Protection: Output Short Circuit, Output DC Bias (Speaker Protection), Over-Temperature · Item Size: 98 x 43 x 30mm (3.9 x 1.7 x 1.2 inches) · Item Weight: 95g (3.4oz) Package Includes: · 1 x 500W Power Amplifier Board This 500W Power Amplifier Board is a versatile and reliable solution for amplifying audio signals without compromising sound quality. Its advanced protection features and efficient heat dissipation make it suitable for a wide range of audio applications, ensuring safety and durability for both professional and DIY audio projects.