The CAM6.6T features (6) six zones (40 Watts per zone) Internal AM/FM Tuner (5/6) Source Inputs (2) Fixed or Variable line outputs routed IR adjustable bass/treble/loudness/balance Built-in IR Learner and Pre-programmed IR library muting. Rear RS232 port color-coded detachable 14-guage snap connectors rack-mount 2-unit high. (6) IR Emitters 12 Volt & H.T. Triggers. Controller ONLY No keypads. Rack ears and AM/FM antennas included.