Harmonai HK-833H Modified Wireless Dual Microphone System product image

Product Overview

Harmonai HK-833H Modified is a wireless dual microphone system engineered specifically for KTV and conference room applications. It operates in the UHF band using Phase-Locked Loop (PLL) frequency synthesis, delivering 100×2 independent channels with only 250 kHz channel spacing. The system integrates cutting-edge digital pilot tone technology to completely eliminate inter-room frequency crosstalk. Combined with automatic interference-free channel search, installation and deployment are fast and hassle-free.

The transmitter features 42-step adjustable output power, infrared auto-pairing, and a unique dual-boost design. Its aluminum body and integrated LCD display ensure both professional-grade engineering quality and user-friendly operation. With two wireless microphones paired to a single receiver, this system effortlessly covers more than 100 KTV rooms — making it an ideal choice for large-scale installations.

Digital Pilot Tone Technology

Cutting-edge digital pilot tone technology that fully eliminates frequency crosstalk between KTV rooms

Feedback Suppression

Built-in feedback suppression circuitry for simplified setup and tuning

Channel Search

Automatic interference-free channel search function for faster, easier installation

Operating Band

UHF band

Frequency Synthesis

Phase-Locked Loop (PLL) frequency synthesis

Number of Channels

100×2 channels

Channel Spacing

250 kHz

RF Filtering

Two-stage high-performance RF filtering for excellent interference rejection

IF Filtering

First IF uses SAW filter; second IF uses triple-ceramic filter

Mute Circuit

Specially designed mute circuit that fully eliminates pop noise during microphone power-on and power-off

Power Source

Microphones use AA batteries

Battery Life

6–10 hours

Boost Design

Unique dual-boost design ensures consistent microphone performance even as battery voltage drops

Operating Range

Up to 50 meters or more in optimal conditions

Microphone Configuration

Standard configuration includes LCD display and aluminum microphone body

Transmission Power

42-step adjustable transmission power for flexible adaptation to diverse environments

Pairing Method

Infrared auto-pairing: microphones instantly synchronize to the receiver’s operating channel upon power-on

Primary Applications

KTV engineering-specific model — two microphones per single receiver enable seamless configuration across 100+ KTV rooms

Recommended Use Cases

This product is purpose-built for KTV entertainment venues and conference room systems, especially suited for:

• KTV Room Installations: Dual-microphone configuration with digital pilot tone anti-crosstalk technology enables one system to reliably serve multiple rooms — scalable to 100+ rooms.
• Conference Rooms / Multi-Function Halls: Operating range exceeding 50 meters plus automatic channel search meets wireless audio requirements for medium-to-large meeting spaces.
• Educational & Training Facilities: Built-in feedback suppression and mute circuitry allow stable operation without professional calibration — ideal for classrooms and training rooms.
• Small-Scale Performances / Event Hosting: UHF band combined with dual-boost design ensures signal stability; rugged aluminum microphone body ensures durability.

For detailed product information or bulk engineering quotations, contact the Harmonai professional team — we deliver customized audio solutions.