Spare input panel for the Air 4 radio console.

• Source Select:Each input channel accepts two analog stereo sources: A and B, switched at the top of the panel.
• Program Assign:Output switches assign the selected source signal to any combination of the console's two stereo Program outputs - PGM 1 and PGM 2. Recessed rear panel trimpots adjust the left and right levels of PGM 1 and PGM 2 outputs
• Cue Button:A CUE switch places the channel's signal on the console's cue bus, where ti may be heard on the meterbridge mounted cue speaker, as an interrupt to the console operator's headphones, and as an interrupt to the control room monitor speakers, if so programmed.
• Fader:Level is set by a long-throw fader. The fader is the sliding mechanism that determines how strong is the presence of the input in some of the various console outputs.
• ON Button:The ON button turns the channel on and off by means of electronic switching and can simultaneously start external source machines.