This loud PA speaker back plate is designed with one jack socket for XLR/Speakon compatibility, making it a versatile addition to any pro audio equipment. The connector plate is made by TUFF, a trusted brand in the industry. It is manufactured in the United Kingdom and is suitable for use with various brands and types of equipment. The unit quantity is one jack, and it is sold as a single item. This connector plate is ideal for use with speaker drivers and horns, and is a must-have for any DJ or musician. It is compatible with a range of brands and types of equipment, making it a versatile and practical choice.