有网友近日在便利店购买了 RODE 最新发布的 NT1 话筒，发现话筒插口上，其中一根针脚突出来了，以为坏了还是怎么样，其实这是 RODE 的独特设计，RODE 所有话筒均采用了该设计。官方有全面的解答：http://www.rodemic.com/faq/pin-1-on-the-xlr-connector-longer
Why is one pin of the XLR connector longer than the other two? is this normal?
Yes, this is perfectly normal and is a design feature of the RØDE microphone.
The ground XLR pin (pin 1) is designed to be slightly longer than the other two pins. This is to ensure that when an XLR is plugged into the mic XLR socket the first pin that comes into contact is the ground pin. This feature is implemented in all RØDE microphones to protect the microphone circuitry from a static electricity short that could potentially damage the microphone circuitry.