Operating Voltage
DC 24V (supplied by main conference host)
Product Overview
The Harmonai GS-880C/GS-880D is a professional-grade wired daisy-chain conference unit with voting capability, available as a chair unit (GS-880C) and delegate unit (GS-880D), designed for medium-to-large conference systems. Each unit features a high-definition touchscreen control interface paired with a long-boom cardioid electret microphone for clear, precise speech pickup. It supports core meeting functions including voting, check-in, and polling—making it an ideal choice for modern conference rooms and multi-functional halls.
Input/Output Interfaces
8P-DIN cable, Category 6A (Cat6A) Ethernet cable
Microphone Type
Cardioid-directional electret condenser
Sensitivity
-46 dBV/Pa
Frequency Response
20 Hz ~ 20 kHz
Input Impedance
2 kΩ
Directivity (0°/180°)
>20 dB (at 1 kHz)
Equivalent Noise Level
20 dBA (SPL)
Maximum Sound Pressure Level
125 dB (THD < 3%)
Signal-to-Noise Ratio
>80 dB
Channel Crosstalk
>80 dB
Total Harmonic Distortion
< 0.05%
Typical Applications
Ideal for formal voting meetings in government agencies, enterprises, and academic institutions. The daisy-chain topology enables flexible serial deployment of multiple units—scaling seamlessly from small-to-medium conference rooms to large multi-functional halls. Touchscreen operation allows chairs and delegates to perform voting, check-in, and speaking requests efficiently—significantly improving meeting productivity.
For full conference system solutions—including conference host, power amplifier, and loudspeakers—contact the Harmonai professional team for a customized proposal.
Harmonai XTA448(24version) Digital Audio Processor — High-Value Export Edition
The Harmonai XTA448(24version) is an export-focused digital audio processor that builds on the proven XTA448 22-version architecture—delivering improved sound quality while removing AES functionality to maximize value for entry-level professional applications.$280.69
XTA448 Digital Audio Processor — Premium Imported Components · Hi-Fi DSP Sound Quality
The XTA448 (21 Version) is a professional-grade digital signal processor (DSP) from Enping Shengkai Audio Equipment Factory, featuring premium imported core components and true 1:1 high-fidelity audio reproduction for demanding studio, live sound, broadcast, and high-end monitoring applications.$275.38
XTA448 Digital Audio Processor (22 Version) — Domestic Alternative, High-Value DSP
The XTA448 (22 Version) is Harmonai’s next-generation digital audio processor (DSP), featuring select high-quality domestic OEM components while delivering 1:1 functional fidelity and outstanding sound quality — an ideal high-value solution for professional audio processing.$275.38
Harmonai GT-X62 Dual-Channel True Diversity Wireless Handheld Microphone System
Professional UHF dual-channel wireless handheld microphone system with true diversity reception, 160 selectable channels, four-antenna dual-receiver design, and HD TFT display. Ideal for stage performances, outdoor events, and conferences.$140.00
Harmonai X5 Professional Karaoke Preamp Effect Processor (Original Version) — 24-bit/32-bit DSP Digital Audio Processor
The Harmonai X5 is a professional karaoke preamp effect processor featuring a 24-bit data bus and 32-bit DSP chip, with 7-band parametric EQ for music, 15-band parametric EQ for microphones, 4 feedback suppression modes, 16 programmable presets, and full-featured PC control—ideal for KTV rooms, live stages, and home theaters.$160.49
Harmonai MR40 UHF Quad-Channel Headworn Wireless Microphone System
The Harmonai MR40 is a professional UHF 640–690 MHz quad-channel wireless microphone system with headworn transmitters. It delivers clear, interference-free audio for meetings, classrooms, live performances, and more.$153.90
Harmonai MR40 UHF Quad-Channel Wireless Conference Microphone System — Professional 4-Channel Conference Solution
The Harmonai MR40 is a professional UHF (640–690 MHz) quad-channel wireless conference microphone system with independent channel reception, >105 dB SNR, and >100 dB dynamic range—engineered for medium-to-large conference rooms, multi-function halls, and training centers.$153.90
Harmonai MR40 UHF Quad-Lavalier Wireless Microphone System | Professional 4-Channel Wireless Conference System
A professional UHF 640–690 MHz wireless conference system with four independent lavalier microphones for simultaneous multi-speaker use in meetings, training, and lectures.$142.90
Harmonai MR40 UHF Quad-Handheld Wireless Microphone System — Professional Conference, Performance & Presentation Audio
The Harmonai MR40 is a UHF 640–690 MHz quad-handheld wireless microphone system supporting four simultaneous channels with up to 100 m range. Featuring -94 dBm sensitivity, >105 dB SNR, >100 dB dynamic range, and <0.5% THD for crystal-clear, stable audio in professional settings.$142.90
Harmonai GS-300 Wireless Pass-Around Conference Main Unit with Video Tracking
The Harmonai GS-300 is a professional wireless pass-around conference main unit with intelligent video tracking, supporting up to 99 units and 4 simultaneous speakers, plus auto-frequency pairing, USB audio playback, and recording — ideal for medium-to-large conference systems.$241.84
Harmonai GS-880 Intelligent Voting Conference System Main Unit — 3.5" Touchscreen · Daisy-Chain Connection · Full Sign-in, Voting, Election & Scoring
The Harmonai GS-880 is a professional wired daisy-chain conference system main unit integrating sign-in, voting, election, and scoring functions. Featuring 3.5" smart touchscreens and high-fidelity capacitive microphone capsules on chairperson/delegate units, it supports hot-swappable connections and dual-microphone redundancy for uninterrupted reliability.$241.84