Input Channels
4-channel input (with 48V phantom power)
Product Overview
The Harmonai FBX4000 Automatic Feedback Suppressor is a professional audio processing device featuring 24-bit high-performance A/D and D/A conversion, supporting 4-channel input (with 48V phantom power) and 2-channel output. Each channel includes 18 independent high-speed automatic notch filters to rapidly and precisely suppress howling frequencies. Combined with a unique frequency-shift operating mode and noise gate function, it boosts system sound pressure level while preserving exceptional audio clarity. The unit features a 2-inch true-color LCD display with switchable English/Chinese interface and USB plug-and-play PC configuration software for intuitive, efficient operation.
Output Channels
2-channel output
A/D & D/A Conversion
24-bit high-performance
Automatic Notch Filtering
18 independent high-speed automatic notches per channel
Howling Scan
Dual-mode (auto/manual), frequency resolution down to 1 Hz
Gain Adjustment
Per-channel range: -80 dB to 0 dB
Noise Gate
Supported — suppresses faint system noise interference
Input Compression
Supported — eliminates feedback while expanding vocal dynamics
Frequency Shift Mode
Supported — used in conjunction with notch filters
Display
2-inch true-color LCD, English/Chinese selectable
Communication Interface
USB plug-and-play communication
Configuration Software
Customizable PC configuration software
Front Panel Lock
Supported — restricts adjustments after power-on
Typical Applications
The Harmonai FBX4000 is widely deployed in professional sound reinforcement venues including live stages, bars, conference rooms, private karaoke rooms, and multi-purpose halls. It effectively resolves acoustic feedback issues, enhances overall audio performance, and delivers reliable feedback suppression for professional audio engineers and sound systems.
To learn more about the Harmonai FBX4000 Automatic Feedback Suppressor, contact our professional support team for a tailored solution.
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