Intelix AMIX-4 4x1 RM VCA Automated Mixer (AMIX-8 shown). Three automatic modes. Front panel accessible dip switches allow users to select among "Standard," "Last Mic On," and "First Come, First Serve" modes of automatic operation. Linkable. Up to 6 AMIX mixers can be linked for 48 channels of automatic mixing; the external AMIX-LINK module offers easy audio and data passive linking. 4 or 8-channel automatic mixing. Automixing provides maximum gain before feedback by attenuating output level by -3dB every time the number of active channels doubles. Filibuster override. Using an external switch, remotely mute all channels except the priority mic to return order to important meetings.