Harmonai KR-780 Dual-Channel Digital Wireless Microphone System

The KR-780 is a professional-grade digital wireless microphone system featuring true diversity reception, DQPSK modulation, and 24-bit/48kHz digital audio conversion. With 26 selectable channels across dual UHF bands, IR sync pairing, and multi-receiver group scanning, the KR-780 delivers reliable, studio-quality wireless audio for live sound, events, and installed applications.

Key Features

• Digital Audio: 24-bit/48kHz converter with >106 dB dynamic range and <2.5 ms latency
• DQPSK Modulation: Superior spectral efficiency and noise immunity compared to analog FM
• True Diversity: Predictive switching diversity with dual BNC antennas eliminates signal dropouts
• IR Sync Pairing: Quick and reliable transmitter-receiver pairing via infrared
• Group Scanning: Multi-receiver coordination via RJ45 networking for large installations
• 26 Channels: 13 channels per band across two UHF frequency groups
• Flexible Outputs: Dual XLR balanced + dual 1/4" balanced/unbalanced
• Long Battery Life: Up to 16 hours (low power) or 8 hours (high power) from 2× AA batteries
• Full Control: Adjustable gain, squelch, TX power, and high-pass filter per channel

Receiver Specifications

RF Carrier Frequency694.4–702.7 MHz / 748.3–757.7 MHz Available Channels26 (13 per channel/band) ModulationDQPSK Working RangeUp to 80 meters RF Tuning Step25 kHz Antenna2× True Diversity (BNC, 50 Ω) Digital Audio Converter24-bit / 48 kHz Dynamic Range>106 dB @ 1% THD Frequency Response20 Hz – 20 kHz Latency<2.5 ms Gain Adjustment-26 to 0 dB (1 dB steps) Max Output+18 dBu Audio Outputs2× XLR Balanced, 2× 1/4" Balanced, 2× 1/4" Unbalanced Network2× RJ45 (multi-receiver group scan) Power SupplyDC 15V / 1500 mA Dimensions483 (W) × 44 (H) × 160 (D) mm Weight1.76 kg (dual channel)

Handheld Transmitter Specifications

RF Carrier Frequency694.4–702.7 MHz / 748.3–757.7 MHz Available Channels26 (13 per band) ModulationDQPSK Working RangeUp to 80 meters RF Power OutputHigh: 30 mW / Low: 15 mW Microphone TypeDynamic, Cardioid Gain Adjustment±12 dB (3 dB steps) Dynamic Range>106 dB @ 1% THD Frequency Response20 Hz – 20 kHz Digital Audio Converter24-bit / 48 kHz Battery2× 1.5V AA Battery LifeUp to 16 h (Low) / 8 h (High) Dimensions267 mm (H) × 54 mm (Diameter) Weight0.34 kg (without batteries)

Applications

Live stage performances, conference halls, houses of worship, corporate events, rental/production companies, and installed sound systems.