Sonifex Redbox RB-BL2, Unbalanced to Balanced Bi-Directional Converter, For connecting consumer and semi-professional devices to balanced line level systems, 2 x XLR inputs, 2 x RCA inputs, 2 x XLR outputs, 2 x RCA outputs, Dimensions 28 cm (W) x 10.8 cm (D) x 4.2 cm (H), Weight: 1.0 kg