Enhance your audio system with this high-performance Power Amplifier Board, designed to deliver powerful and clear sound output with exceptional efficiency. Crafted with a durable PCB material, this amplifier board operates on a dual DC power supply voltage ranging from ±55V to ±80V, with an optimal rated power supply of ±70V, providing up to 500W output power into a 4-ohm load at 1% distortion. Its compact size of approximately 27 x 43 x 96mm makes it suitable for various audio applications while ensuring reliable performance. Key Features: · **High Power Output:** Supports rated output power up to 500W with a ±70V dual power supply and 4-ohm speakers, delivering robust and distortion-controlled sound ideal for professional-grade audio setups. · **Wide Voltage Range & Efficiency:** Compatible with a dual DC power supply input voltage from ±55V to ±80V and boasting an efficiency of 90% or higher to maximize power usage and minimize energy loss. · **Superior Audio Quality:** Features a signal-to-noise ratio of 90dB and low total harmonic distortion, providing crystal-clear sound reproduction across a full frequency response range of 20Hz to 20KHz. · **Speaker Compatibility:** Recommended for 4 to 8-ohm speakers ranging from 10 to 18 inches, offering versatile application from home audio to custom sound projects. · **Fixed Voltage Magnification:** Delivers a stable 50x voltage amplification to ensure consistent sound output. Additional pre-amplification can be added when needed to boost output power further. · **Comprehensive Protection Systems:** Equipped with output short circuit protection, output DC bias speaker protection, and over-temperature protection that shuts off output when the heat sink temperature exceeds 100℃, ensuring safe and reliable operation. · **Compact and Durable Design:** Constructed on a high-quality PCB board with a compact footprint of 27 x 43 x 96mm (1.1 x 1.7 x 3.8 inches), making it easy to integrate into various audio setups without compromising space. Specifications: · Material: PCB · Size: Approx. 27 x 43 x 96mm (1.1 x 1.7 x 3.8 in) · Supply Voltage: Dual DC Power Supply ±55V to ±80V (Rated ±70V) · Rated Output Power: 500W (±70V supply, 4Ω load, 1% distortion) · Efficiency: ≥90% · Signal to Noise Ratio: 90dB · Total Harmonic Distortion: 380W @ 4Ω <0.1%, 280W @ 8Ω <0.1% · Frequency Response Range: 20Hz–20KHz · Speaker Impedance: 4–8Ω · Voltage Magnification: 50 times · Input Sensitivity: 1V (RMS) · Protection: Output short circuit, DC bias speaker protection, over-temperature shutdown Package Includes: · 1 x Power Amplifier Board This Power Amplifier Board is an excellent choice for high-power audio amplification with advanced protection features, reliable performance, and professional-grade sound quality. Ideal for audio enthusiasts seeking powerful amplification with low distortion and superior efficiency in a compact design.