Description:  Available in 2-channel and 4-channel models, this series of 1U Rack-Mount Digital Audio Power Amplifier features advanced full-bridge switching power supply and Class-D amplification technology, delivering high efficiency, low distortion, and stable performance. Ideal for professional audio, conference systems, and live venues. Features:  Full-Bridge Power Supply: With imported magnetic transformer for strong anti saturation capability, high efficiency, stable performance, and reduced weight. Efficient Heat Dissipation: Optimized airflow design with aluminum heat sinks and variable speed fans ensures reliable low-temperature operation. Comprehensive Protection: DC, overload, short circuit, and thermal protection, with built-in fuse and soft-start function to prevent current impact. High Audio Quality: Low distortion, wide frequency response, and low noise. Clear highs, smooth mids, and powerful lows, with clip limiter to protect speakers.