Professional Karaoke Preamp product image

Product Overview

The Harmonai KTV8 is a professional-grade karaoke preamp processor, featuring a premium aluminum front panel and an ultra-slim 1U chassis—elegant in appearance and space-efficient for rack mounting. Its standout feature is 6-band parametric equalization for microphones, offering wide adjustment range to refine vocal clarity and smoothness without compromising original tonal character. This enables precise suppression of feedback frequencies. The subwoofer output includes adjustable crossover point and output gain, plus comprehensive low-frequency anti-howling circuitry: when a signal enters the MIC input, the subwoofer output automatically attenuates by 50% to prevent low-frequency feedback damage. Combined with intuitive card-style controls, setup and fine-tuning become fast, simple, and efficient.

Front Panel Material

Premium aluminum

Chassis Format

1U ultra-thin design

Microphone EQ

6-band parametric equalization

Subwoofer Output

Adjustable crossover point and output gain

Low-Frequency Anti-Howling Protection

Automatic 50% attenuation of low-frequency signals upon MIC input

Microphone Signal Exclusion from Subwoofer Channel

Supported

Signal-to-Noise Ratio (L/R Channels, 1kHz, 0dB)

90dB

Signal-to-Noise Ratio (Center Channel)

87dB

Signal-to-Noise Ratio (Subwoofer Channel)

87dB

Channel Separation

75dB

Frequency Response (Music)

10Hz ~ 30kHz

Frequency Response (Microphone)

20Hz ~ 15kHz

Music Bass Control

±10dB (100Hz)

Music Treble Control

±10dB (10kHz)

Microphone Bass Control

±10dB (100Hz)

Microphone Treble Control

±5dB (10kHz)

Microphone Mute Threshold

Trigger voltage: 3mV; activation time: 3 seconds

Total Harmonic Distortion

0.03% (1kHz, 30mV)

Physical Dimensions

483 × 44 × 208mm (W×H×D)

Power Supply

AC 220–240V / 50–60Hz

Recommended Applications

The KTV8 is ideal for professional KTV rooms, home HI-Fi setups, bars, lounges, and other venues demanding high-fidelity karaoke audio performance. Its 6-band parametric EQ empowers sound engineers to precisely identify and suppress feedback frequencies—ensuring clear, articulate vocals. The adjustable subwoofer output delivers deep, powerful low-end response tailored to any KTV system. Integrated low-frequency anti-howling protection and mute functionality safeguard equipment and speakers, extending service life. The 1U ultra-thin aluminum chassis ensures seamless rack integration—making it the preferred choice for professional audio installations and discerning users.

For detailed technical specifications or custom audio system recommendations for the Harmonai KTV8 Professional Karaoke Preamp, contact us today.