640mThe dbx 640m is a digital zone processor with six inputs and four outputs. It features four balanced mic/line switchable terminal block inputs and two mono-summed pairs of unbalanced RCA inputs. Hardware-controlled microphone gain allows adjustment per channel. The device has a pre-configured architecture with input processing, a central matrix, and output processing. Two input insert positions and one output insert position are configurable. AutoWarmth® is available per output zone, maintaining