GPY-900 Professional Karaoke Preamp product image

Product Overview

The Harmonai GPY-900 is a professional karaoke preamp effect processor designed for KTV venues, home theaters, and professional audio users who demand exceptional sound quality. Powered by an ADI 56-bit DSP algorithm chip and 192 kHz high sampling rate, it delivers full-spectrum 5.1-channel audio processing (main stereo, subwoofer, center, rear stereo). Equipped with a 2.0-inch TFT color display, it offers bilingual (Chinese/English) visual operation, showing real-time volume parameters, input status, microphone level, music level, and other key metrics—ensuring precise, intuitive adjustments every time.

It features 8 factory preset effect modes that can be fully customized and saved for instant recall, adapting flexibly to diverse scenarios. Integrated with a new Actions Semiconductor audio decoding chip, it supports USB drive playback, optical/coaxial digital inputs, and Bluetooth 5.1 connectivity—delivering Hi-Res certified high-fidelity audio with low latency. Its professional reverb and echo algorithms are optimized for dynamic and wireless microphones, delivering high vocal clarity, wide dynamic range, and ultra-low distortion—a globally recognized professional audio solution.

DSP Chip

ADI 28-/56-bit DSP algorithm chip, 192 kHz sampling rate

Channel Support

5.1 channels (main stereo, subwoofer, center, rear stereo)

Parameter Adjustment

Adjustable PEQ, HPF, LPF, and phase; EQ gain range ±18 dB

Display Screen

2.0-inch TFT color screen with bilingual (Chinese/English) support

Effect Modes

8 factory preset effect modes; fully customizable and saveable

Audio Decoding

New Actions Semiconductor audio decoding chip; USB drive playback, optical/coaxial input, Bluetooth 5.1 protocol

Frequency Response

20 Hz–20 kHz @ +4 dBu: +0 / –0.3 dB

Total Harmonic Distortion

20 Hz–20 kHz @ +4 dBu: <0.08%

Signal-to-Noise Ratio

98 dB @ +4 dBu, A-weighted

Channel Separation

<–101 dB @ +4 dBu

Max MIC Input Level

200 mVrms / peak level 70 mVrms

Max RCA Input Level

1.7 Vrms / peak level 450 mVrms

Max Output Level

2.5 Vrms

Input Impedance

Balanced 20 kΩ / unbalanced 10 kΩ

Output Impedance

Balanced 100 Ω / unbalanced 50 Ω

Power Consumption

220 V – 10 W

Recommended Applications

The GPY-900 is ideal for professional KTV private rooms, home karaoke systems, small live sound reinforcement, bar performances, and vocal processing in recording studios. Its 5.1-channel cinema-grade output also makes it suitable for home theater front-end audio processing. Built-in feedback suppression effectively prevents howling, while the noise gate and power-on/off protection ensure stable long-term operation. Bluetooth 5.1 wireless streaming and direct USB drive playback further enhance convenience and flexibility.

Want more technical details or usage guidance for the GPY-900? Contact the Harmonai professional team today for a customized audio solution.