AtlasIED A-BT - Bluetooth Remote Audio Input Module for Atmosphere System (White)The Atmosphere A BT is a remote Bluetooth audio input (mono) to an Atmosphere AZM audio processor. This expansion allows the Bluetooth receiver to be optimally placed for wireless coverage. The AZM will automatically detect the A BT and dynamically assign appropriate audio settings, such as makeup gain, EQ, and auto gain control, to that input. The stereo source audio is summed to a mono signal before being sent to the AZM. Each Atmosphere accessory