The Amphenol AC4M is a 4-pole male XLR cable connector from Amphenol's AC series, used to build and repair 4-pin XLR leads. 4-pin XLR is used for intercom headsets, camera and monitor DC power leads and some control equipment, so it is a standard spare for sound engineers, lighting technicians, hire companies and installers. The AC series has a zinc diecast shell with a nickel finish, a black boot, and a chuck-style strain relief that grips the cable firmly without screws. Contacts are machined, silver plated for solder termination and take wire up to 16 AWG. Amphenol rates it at 10 A per contact, 133 V RMS service voltage (1,400 V AC test), IP40, UL94 V-0, -25 to +75 °C and 1,000 mating cycles, and lists it as comparable to the Neutrik NC4MX, AA4M. Supplied as a single connector; cable not included.