The benefits of balanced connection in XLR are:

1. Strong Interference Resistance: Balanced connectors use three separate conductors - positive phase, negative phase, and ground. This design allows for the elimination of interference during transmission, making audio transfer more reliable and stable.

2. Long-Distance Transmission: Due to its strong interference resistance, balanced connectors can achieve long-distance audio transmission. This is crucial in many scenarios, such as large concerts and stage performances.

3. Reduced Common Mode Interference: Balanced connectors subtract the positive and negative phase signals, effectively eliminating common mode interference. This type of interference is typically caused by external electromagnetic fields or other equipment, and balanced connectors can cancel out these interference signals.

4. Improved Audio Quality: Thanks to the interference resistance of balanced connectors, higher audio quality can be ensured. This reduces the impact of interference on the audio, resulting in clearer and more authentic sound.

In summary, the design of balanced connectors has led to their widespread use in audio equipment. They provide high-quality, reliable audio transmission and are especially suitable for professional audio environments, such as music recording studios, performance venues, and live recording setups.