1. Supports automatic howling point suppression, displays the number of howling points, with a frequency shift range of 0.5‰; 2. Supports 96KHz sampling rate and 24bit A/D & D/A conversion; 3. Digital signal input/output channels provide coaxial, AES and optical fiber interfaces; 4. Supports LCD display for function settings, with 6-segment LED to show output level; 5. Supports switching working mode between bypass and feedback suppression, and one-key clearing of detected howling points; 6. Supports manual or PC software-based setting of DSP parameters (input gain, EQ, gate, compressor, limiter, etc.) for the feedback suppressor. It can save 10 preset modes, and supports mode archiving as well as EQ archive import/export; 7. Frequency Resolution: 0.5Hz; 8. Input Range: ≤+20dBu; 9. Signal Input Frequency Response: 15Hz-25KHz (-0.3dB); 10. Signal-to-Noise Ratio (SNR): 98dB @1KHz 0dBu; 11. Distortion: ＜0.01%; 12. Channel Separation: ＞80dB (1KHz); 13. Adopts adaptive notch filtering algorithm, which can accurately lock and suppress new howling points within 300ms without affecting speech intelligibility; 14. Supports "Learning Mode": automatically scans room acoustic characteristics during system commissioning to preset safe frequency points; 15. Equipped with Windows/macOS graphical software, supporting real-time spectrum analysis and visual editing of notch points; 16. Allows independent setting of left/right channels or linked processing, adapting to mono/stereo sound reinforcement systems; 17. Supports firmware OTA upgrade via USB interface to continuously optimize algorithm performance; 18. Features "Safe Mode" protection mechanism: automatically bypasses when abnormal signals are detected to ensure uninterrupted audio path; 19. Suitable for multi-function halls, churches, courts, distance education and high-gain voice sound reinforcement scenarios; 20. All presets can be directly imported/exported via USB flash drive, enabling cross-device configuration synchronization without a PC.