Feature: 1. LESS INTERFERENCE: This sound transmitter adopts unique balanced impedance conversion transmissing and analog sound spread spectrum isolation technology, which has strong anti interference and EMI capabilities. 2. NOISE REDUCTION: Can effectively solve equipment distortion and sound noise caused by long sound transmissing lines or ground potential difference loop currents, and eliminate sound background noise and other phenomena. 3. ISOLATION EFFECT: Isolate the potential difference between two system to prevent damage to the equipment input stage caused by excessively high potential differences. The isolation voltage is greater than 800V, the insulation resistance is 100MΩ. 4. MULTIPLE FUNCTIONS: Realize secure transmissing of sound signals and eliminate noise generated by sound equipment connections. Solve the communicating noise caused by electricity consumption, wiring, lighting interference, and other reasons in the venue. 5. CONVENIENT USE: This 4 channel XLR sound transmitter is compact and lightweight, allowing you to enjoy balanced digital or analog signal transmissing and clear and excellent sound in various indoor and outdoor environments. Specification: Item Type: XLR Sound Transmitter Bandwidth: 20Hz to 2KHz Peak Input Signal: 1.1Vp-p Input Sound Source Impedance: 600Ω Receiving Sound Equipment Impedance: ≥10KΩ Insertion Loss: <1dB Signal Reflection Ratio: >15dB Common Mode Rejection Ratio: >60dB Transmissing Distance and Frequency Relationship: 305m (59Hz-20kHz), 1525m (98Hz-20kHz) Isolation Voltage: >800V Insulation Resistance: 100MΩ Protective Rating: 2KV Compliance Standard: IEC61000-4-5 Interface: 4 input conversion cable for XLR/6.5 port, a RJ45 network port Network Cable Standard: International Standard 568B. Package List: 1 x XLR Sound Transmitter