DL XLR Connectors Neutrik DL XLR Connectors feature a universal D-size shell for male and female versions. The metal housing, in nickel or black plating, offers RF protection. The DL series is available in 3-, 4-, 5-, 6-, and 7-pin configurations with silver- or gold-plated contacts. Neutrik DL XLR Connectors are UL-recognized components.