This RCA audio balun is ideal for corporate A/V, school, home theater and most of any other situation involving structured audio distribution and transmits dual mono or single stereo audio signals via Cat.5/6 UTP cable. This balun provides a low cost and versatile cabling solution for any audio distribution. ‧Specification 1. Bandwidth: 10Hz to 50 KHz ±3db 2. Impedance: RCA 600 ohm (Red/White-Audio to RJ45 100 ohm) 3. Connectors: Two RCA to One RJ45 4. Dimensions: 49.2x43x25mm 5. Max. Distance: 2500 feet (Cat.6) 6. Isolation: 500 V 7. Nominal Level: 1.0 volts 8. Common Mode Rejection: Greater than 40 db 9. Cable:   UTP: 24AWG or lower solid copper   Impedance: 100 ohm at 1 MHz   Maximum capacitance: 20 pf /ft   Attenuation: 6.6 db / 1000 ft at 11 MHz 10. Pin out    Left: 3&6, pair 3    Right: 1&2, pair 2 11. Temperature    Operating: 0 to 55°C    Storage: -20 to 85°C    Humidity: up to 95%