Max Input/Output Signal Level
Balanced: +18 dBV peak / Unbalanced: +12 dBV peak
Professional audio, microphones and system integration

The Harmonai FBX2810 is a professional-grade feedback suppressor, engineered specifically to eliminate howling and acoustic feedback in audio systems. With a standard 1U rack-mount size (48.3 × 4.5 × 15.9 cm) and a lightweight design of only 3.6 kg, it integrates seamlessly into KTV rooms, conference systems, stage performances, and other professional audio signal chains.
The FBX2810 delivers an exceptional SNR of >108 dB and an ultra-low THD of just 0.005%, combined with full-bandwidth frequency response from 20 Hz to 20 kHz (±0.3 dB), ensuring precise, uncolored audio signal reproduction—free from feedback interference. It supports both balanced and unbalanced input/output modes and features XLR-3 and 1/4″ TRS connectors for maximum compatibility.
Balanced: +18 dBV peak / Unbalanced: +12 dBV peak
Designed to drive a load >600 Ω per unit specification
Balanced or unbalanced input impedance >40 kΩ, pin-2 hot
Balanced or unbalanced output impedance: 150 Ω, pin-2 hot
True power-off bypass
Typical: 4 dBV balanced input; max peak +14 dB
XLR-3 and 1/4″ TRS
20 Hz–20 kHz, ±0.3 dB
±0.2 dB
+0.25 dB, 20 Hz–20 kHz
>108 dB
0.005%
<0.01%
<0.025%
220 V
115 V AC: 0.1 A, 10 W, 0.16 A fast-blow fuse; 230 V AC: 0.06 A, 10 W, 0.16 A fast-blow fuse
3.6 kg
1U rack-mount, 48.3 × 4.5 × 15.9 cm
The FBX2810 feedback suppressor is ideal for venues requiring high-fidelity audio reproduction, including KTV rooms, multi-function conference halls, professional stage performances, lecture halls, and live music bars (Live Houses). Whether used for vocal performances or speech-based presentations, it reliably eliminates howling and ensures clear, natural, feedback-free sound.
For detailed configuration guidance or bulk purchase quotations for the FBX2810 feedback suppressor, contact the Harmonai professional team.