Ampex AVR-2 Quadruplex VTRs
While the VR-1200s were the mainstay for presentation duties, it was the AVR-2s that stool tall in the production environment.  These were a much later machine than the 1200s, and had reliable cue tone editing.  At night, when the possessive production manager wasn't, around, they were also used for some 'on air' duties...Shhhhhhhh, don't tell 'Erby'!

David King