Designed for professional press conferences, the Whirlwind PB-12 Passive press box expands a single line-in connection into 12 microphone out connections, free from interchannel and RF feedback and noise.
The PB-12 is robust and rugged, with a cold steel housing to survive all manner of jostling and impacts. The sound is similarly robust, with transformer isolation and grounding for every output to eradicate noise and interference.
(PDF) Whirlwind PB-12 Press Box User Manual
