Effects Processing
Dual-mode reverb processing delivers rich, natural, and transparent vocal effects
Product Overview
The Harmonai FX12 Professional Karaoke Preamp employs dual-mode reverb processing technology to deliver rich, natural, and transparent high-fidelity stereo vocal effects. Featuring a premium aluminum front panel and a 1U ultra-slim chassis, it integrates comprehensive karaoke controls with multi-channel I/O — simple to operate and ideal for professional KTV and HI room sound tuning.
Output Channels
Front (or rear) left + right channels, center channel, and subwoofer frequency channel
Panel & Chassis
Premium aluminum front panel, 1U ultra-slim design
Microphone EQ
6-band parametric equalization with wide adjustment range for refined, smooth vocal tone
Subwoofer Channel
Independent output design with adjustable crossover point and output gain
Feedback Protection
Advanced low-frequency self-excitation protection circuit on the subwoofer channel; automatic 50% low-frequency attenuation during MIC input
Center Output Control
Selectable music/reverb ratio or pure vocal mode, with independent volume and treble/mid/bass control
MIC Input Channels
5 channels (2 front + 3 rear)
Audio Input Options
Bluetooth, optical, and USB audio inputs
Display
LED display: shows brand logo when powered on/off; real-time spectrum visualization across four output groups
Signal-to-Noise Ratio (L/R Channels)
≥90dB (1kHz, 0dB)
Total Harmonic Distortion
≤0.03% (1kHz)
Sensitivity
Microphone: 6mV/4kΩ / Auxiliary: 280mV/30kΩ
Frequency Response
40Hz–15kHz (+1/−6dB)
Channel Separation
≥75dB
Recommended Applications
Ideal for professional karaoke venues, KTV private rooms, HI music rooms, and home theater systems. Its 5 MIC inputs support simultaneous multi-user singing; Bluetooth/optical/USB inputs ensure broad compatibility with diverse audio sources; and its standard 1U rack-mount form factor enables easy installation.
Contact our professional team today for more details or a quote on the FX12 Professional Karaoke Preamp.
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