Glensound Talent Box/3 MkII Advanced Single Unit Commentary SystemThe Glensound Talent Box is digital in both control and internal audio circuits with extended positions. Talent Boxes can also link for multiple commentator systems. TALENT BOX 3: This version features transformer balanced inputs and outputs. Inputs Three front panel inputs on XLR are mic line switchable. Input B has an additional parallel input on a 3. 5mm jack socket. There is an adjustable gain control and a phantom power switch to add 12v or 48v