XLR is generally the industry standard for electric connectors in professional sound studios. The relevant cables, such as microphone cables, provide top audio quality. They also have a sturdy design and different protection classes for mobile use, which make the suitable for mobile use and thus for concerts or similar events. Locking mechanisms ensure a reliable, secure contact, even in motion. The closed design prevents faults due to contact with metal parts. XLR cables are sometimes used as speaker cables or for power supply to cameras.