Processor Chip
U.S.-made DSP chip, digital processing system
Professional audio, microphones and system integration

The Harmonai FBX2.2 automatic feedback suppressor features next-generation DSP digital processing technology, engineered specifically to eliminate microphone feedback squeal. It automatically enters feedback suppression mode at power-on—no complex setup required—making it ideal for meeting rooms, multi-function entertainment venues, small-to-medium live events, KTV rooms, and home theaters.
This unit features a 2-in/2-out channel design. Its input stage includes a versatile socket supporting both CANNON XLR and 6.35mm (1/4") connectors, ensuring flexible compatibility with diverse audio equipment. Dual DSP processors provide 68 filter points for fully automatic feedback frequency scanning and precise notch filtering—preserving high-fidelity audio reproduction.
U.S.-made DSP chip, digital processing system
68 filter points total across dual DSP processors, fully automatic scanning
2-in/2-out (2 input channels / 2 output channels)
CANNON XLR + 6.35mm (1/4") multifunction socket
CANNON XLR + 6.35mm (1/4") multifunction socket
Automatic startup at power-on, dynamic real-time filtering
Balanced EQ restored within 2 seconds after each notch filter activation
Automatic peak limiting at critical signal levels to prevent overload distortion or equipment damage
Rear-panel button activates +12dB gain boost
AC 220V
-1dB / 11dB
15kΩ
300Ω
80Hz – 15kHz
82dB
The Harmonai FBX2.2 Automatic Feedback Suppressor is widely used in meeting rooms, multi-function entertainment venues, small-to-medium live events, KTV rooms, and home theaters. Whether for professional sound reinforcement or everyday entertainment, it effectively eliminates microphone howl and delivers clear, pristine audio quality.
For more product details or expert sound reinforcement recommendations, contact our sales team.