The C6643HD is a professional 12-input / 12-output conference system digital audio processor designed for conference rooms, multimedia classrooms, concert halls, command centers, theatres, churches, sports venues, and remote video conferencing systems. It provides flexible matrix mixing and high-quality audio processing for clear, stable, and controlled sound performance.

Built with 24-bit / 48kHz audio conversion, a 32-bit floating-point DSP processor, and advanced audio algorithms, the C6643HD supports feedback cancellation, echo cancellation, noise suppression, automatic mixing, EQ, gate, and gain control. It also supports Dante network audio transmission, making it suitable for modern networked conference and professional audio systems.