Spec Sheet Preview: The Alpha Communications® / Pacific AF-1000 Power Pack Amplifier is a self-contained unit not requiring an external amplifier. The AF-1000 is designed for use with certain 6, 5, 4 or 3 wire apartment speaker type stations (such as models 3403, 3404 and 3406) and provides amplification, control and power circuits needed to operate a complete apartment intercom system. Voice volume control and tone volume control are easily adjustable through the screwdriver slot on the front panel. It is also a direct replacement for many of the older …