APart has introduced the Concept 1, a competitively priced integrated amplifier for professional use. It can operate with one stereo zone, two volume-linked zones, or two individual-volume zones. The unit also offers versatile user and installer settings, RS-232 control, gain-adjustable line-inputs, and a MIC-input for paging.
Apart from standard user controls, there are expert settings that can only be adjusted by the installer. These include maximum volume per zone, the microphone levels and pre-set gain per source.
The units can operate in a stand-alone mode, or be remotely controlled via IR or RS-232 and feature four stereo, gain-adjustable line-inputs as well as an integrated switchable highpass filter for subwoofer use.