640MHZ-690MHZ Wireless Microphone System with One Transmitter and Four Receivers Featuring PLL Phase Locked Frequency Synthesis

The Mekey Advanced Wireless Microphone System (Mi-1604ha) pairs one transmitter with four receivers, delivering reliable multi-channel audio for conferences, presentations, and performance environments.

• 1Distributed reception technology ensures a more stable signal, a longer reception distance, and broader applicability.
• 2A 2U standard chassis with a color large-screen display presents the system menu clearly. Each channel's RF and audio status is independently shown via LED indicators for an intuitive overview.
• 3Four channels offer independent volume adjustment, along with SQ and IR infrared frequency pairing control. A 4+2 audio output mode greatly simplifies daily operation.
• 4Real-time monitoring of transmitter battery level is supported, and the system menu stores six sets of stacked machine frequencies for quick retrieval. Transmitters can be mixed and matched across meeting, handheld, or clip-on applications.
• 5The system operates on 4 × 50 frequency points, with each channel offering 50 adjustable points. The default frequency range is 640–690 MHz.

Guangzhou Jiuding Audio-Visual Technology Co., Ltd. is a comprehensive enterprise integrating R&D, production, and sales, and it owns the high-quality "MEKEY" brand of professional audio equipment.

The company operates its own large modern industrial plant covering over 6,000 square meters, equipped with advanced processing production lines and a complete online detection system. It possesses core technologies in crossover boards, speaker units, and audio processing systems. The factory includes a product research and development department, production department, quality inspection department, and a product exhibition hall.

Guangzhou Jiuding Audio-Visual Technology Co., Ltd. offers a complete product range and is capable of providing customers with overall solution services, including scheme design, drawing design, bidding and tendering. Products include professional speakers, audio-visual speakers, professional power amplifiers, conference microphones, paperless meeting systems, conference recording and broadcasting, video conferencing systems, central control systems, and video matrix systems — suitable for various outdoor and indoor performances. These products have been repeatedly applied in fields such as the military, government, public institutions, and large enterprises, with over 200,000 successful cases and a very high reputation.