Vintage ZENITH models NPS40G, NPS40G1, NPS40L, NPS40L1, NPS45P, NPS45P1, NPS45X, NPS45X1, X540G, X540L, X547P and X547X (Chassis 4NT20).  AC operated 4 transistor stereo amplifier with 4 speed automatic record changer.  Original old Sams Photofact manual includes schematic, parts layouts, parts list and description. 2 pages. Dated 10-1966. Manufactured by Zenith Radio Corp., of Chicago, IL. This manual would make a sensational accompaniment to your retro phonograph equipment.