1、Working Principle: Wireless ear monitor system combines HiFi sound with a clear mix, allowing players to hear themselves clearly at lower volumes. Suitable for exhibition live broadcast listening, stage return monitoring. 2、Professional: Up to 8 simultaneous systems per band, three receiver modes, individual mix, stereo and mono. Individual mix control allows control of the volume and mix of two separate signals at the receiver. 3、Stable Signal: The wireless earphone monitor system supports the preferred XLR loop out (true straight through), connecting the signal to a mixing console, additional IEM system or recording device without signal degradation. 4、Anti Interference: This studio monitoring system's adjustable squelch eliminates annoying static frequency guide sound and prevents RF interference when the transmitter is turned off. Portable system can be quickly loaded and set up. 5、High Performance: Professional stage ear monitor system reduces stage sound clutter for a better overall mix and less feedback. Use any number of stereo receivers on the same frequency (with separate mixes). Item Type: Wireless Ear Monitor System Material: Iron Shell Frequency Range: 566-608MHz Earphone Output Interface: 3.5mm Stereo Socket Transmitter Power Supply: DC9v, 500mA Receiver Operating Time: Greater Than 12 Hours Receiver Battery: 2 x AA Batteries (Not Included) Operating Range: Approx. 100m/328ft (Open Environment Without Obstructions) RF Transmitting Power: <10nW Dynamic Range: 90dB Harmonic Distortion: <1% (1KHz, ±20KHz Frequency Deviation) Frequency Response: 40Hz-18KHz Earphone Output Power: 65m (32Ω) 1 x S3 Transmitter 1 x S3 Receiver 1 x Power Adapter 1 x Instruction Manual 1 x Antenna 2 x Pairs of Eartips 1 x Earphone