・【Versatile Audio Transmission】The AU680A XLR wireless audio transmitter and receiver set offers professional-grade audio transmission for various applications. ・【Long-Range Performance】Achieve up to 100 meters (328 feet) of transmission distance in open areas, ensuring reliable audio delivery in large spaces. ・【Low Latency】Experience near-instantaneous audio transmission with less than 0.5ms delay, perfect for live performances and real-time monitoring. ・【High-Quality Audio】Enjoy excellent sound quality with a 20Hz-20kHz frequency response, 95dB signal-to-noise ratio, and 90dB dynamic range. ・【Multiple Input Modes】The transmitter supports three input modes: stereo audio, standard microphone, and surveillance microphone, offering flexibility for different audio sources. ・【Adjustable Transmission Power】Choose from 1-100mW transmission power (default 100mW) to balance range and power consumption based on your needs. ・【Channel Selection】The transmitter offers one-way cyclic channel selection, while the receiver provides both automatic search and manual channel switching options. Specifications: ・Operating Voltage: 3.6–6V DC (Transmitter & Receiver) ・Working Current: Max 120mA (Transmitter)/Max 40mA (Receiver) ・Ambient Temperature: -16–65°C ・Actual Operating Frequency Range: 590–619MHz ・Modulation: GFSK (Transmitter) ・Channel Spacing: 2M bps ・Frequency Selection Method: 4MHz ・Frequency Selection: Carrying Channel One-Way Loop Selection (Transmitter)/Automatic & Manual Search (Receiver) ・Frequency Stability: ±100KHz ・Working Channels: 20CH ・Module Channel Spacing: 4MHz ・Transceiver Distance: 330 feet (in open space) ・Transmit Power: 1–100mV (Default 100nV when ordering) ・Receiving Sensitivity: -90dBm (Receiver) ・Input Level: Max 1.0Vpk (Transmitter) ・Input Resistance: 10k ohm (Transmitter) ・Interface: XLR*2/RCA/6.35/3.5mm ・Support: Balance/Unbalance (Transmitter), Lift/Earth (Receiver) ・Stereo Output Level 1: 30mW RL=32Ω (Receiver) ・Stereo Output Level 2: 50mW RL=32Ω (Receiver) ・Output Impedance: 1k ohm (Receiver) ・Input-Output Gain Ratio: 1:01 ・Frequency Response Range: 20–20000Hz ・Time Latency: