- Page port pre-amp / expander - Pre-amplifies low level audio to remote sites - Provides virtually unlimited expansion for any system (150 Valcom one-way speakers per VC-V-1094) - Master volume control for entire system or groups of remote speakers - Isolates page port from speaker lines - Output impedance: 600ohm - Power requirements: -24 Vdc 45 mA - Weight: 1.1lbs - Dimensions: 4.44inchH x 2.75inchW x 2.88inchD - VALCOM POWER UNIT (-1)