mult box
n.— «To allow the cameras to record high-quality audio, The Brookings Institute borrowed what’s known as a “mult box” from the Hilton hotel on Embassy Row. The mult box connects to the podium microphone and has two dozen inputs; it’s easy to plug in and record.» —“A Gimpy Microphone Doesn’t Faze Obama” by Marc Ambinder Atlantic.com Sept. 18, 2007. (source: Double-Tongued Dictionary)