RAD4 – Dual XLR Line Outputs on August 30, 2015 | Marketing Team A RAD4 provides two balanced line outputs on XLR connectors. The RAD4 mounts in a standard 2-gang US electrical box. It is available in white, ivory, or black, with a matched Decora™ plate cover included. Order model RAD4W for white, RAD4I for ivory, and RAD4B for black. RAD4 Dual Balanced Line Outputs Data Sheet (200k)