[16-132-304] 1X4 Balanced Mono Audio DA, Unity Gain


The 12V AC Brick™ is designed to function properly with an input power of 11-13V AC. The Brick will not operate from a DC voltage.

A 2.1mm P5 style connector is used for the power input. If the input voltage is a grounded system, the center pin of the P5 is the power connection and the barrel is the ground side.

All ProSeries units are shipped with a 12V AC, 600mA floating power supply that eliminates any ground loops through the power supply connection.

Single Unit Price $337.00 each


  • Balanced mono audio distribution amplifier
  • Unity gain
  • Individual drivers
  • Terminal block connectors


Group ProSeries
# Channels 1
Inputs/Channel 1
Outputs/Channel 4
Input 1 Signal Type Balanced Audio
Input 1 Coupling DC
Input Configuration 1 Standard 75 Ohms
Gain Configuration Global
Input 1 Connector 3 pin Terminal Block
Output 1 Signal Format Balanced Audio
Output 1 Coupling DC
Output 1 Connectors 3 pin Terminal Block
Power Connector P5
Input Voltage 1 12 VAC
Height .65
Width 4.4
Depth 2.2
Low Operating Temp (C) -40
High Operating Temp (C) 50
Control 1 Contact Closure
Control 1 Connector 6 pin DIN
Power Bypass NO
Mounting Two 6-32 Inserts



Power Supply

This unit has a very basic linear power supply with a 12 VAC input voltage requirement. A 12 VAC wall transformer (120 VAC input) is supplied with each unit. By using the wall transformer the power system provides ground isolation between the input power and the video circuits. The power supply uses a half wave rectifier design to develop the internal positive and negative voltage rails for the active operational amplifiers.


The package for this unit consists of a solid epoxy block. The internal electronics are assembled and tested before the encapsulation process. During the encapsulation the printed circuit board(s) are placed in a five sided box made of RTV mold parts. The cavity is filled with epoxy and the lid (top) of the mold is inserted. The curing process takes 24 hours. This type of package seals the electronics so water and contamination cannot affect the internal electronics. This type of package also provides superior resistance to shock and vibration compared to a metal or plastic box enclosure.