A-Box (Weapon/Epic-W/Scarlet-W/Raven) allows for two XLR microphones to be plugged into the RED DSMC2 Brains (Monstro, Helium, Gemini), Weapon, Epic Weapon (Epic-W), Scarlet Weapon (Scarlet-W), Raven, and other DSMC2 cameras while using the Base Expander Module. It is also compatible with any camera having a single 3.5mm input (also referred to as 1/8"). Highest quality professional grade connectors. Comes with Bolt On 19mm Rod for attaching to any 1/4-20 threaded hole and 15mm Adapter Bushing for clamping to 15mm rods. This adapter does not provide phantom power and the RED Base Expander Module is a required item (not included). Includes: (1) 1/4-20 x 3/8" screw (1) Bolt On 19mm Rod (1) 15mm Adapter Bushing Specifications: Weight: 363g (0.8 lbs) Dimensions: 76 x 76 x 178 mm (3.0 x 3.0 x 7.0 in)