Source:Singer-General Precision, Inc., Pleasantville, NY (1969)
The Singer Co. GPL TV Systems Education & Training Products Group. GPL's New Color Video Tape Recorder: VR-400. Cover: In full color, the new recorder by Singer shines through an eyehole of this black-mask cover. Inside headings: Why this format?, Applications, Specifications, Features, and VTR, CCTV, and GPL.