Vintage BOGEN PRESTO model MX60 60 watt audio amplifier. Original old Sams Photofact manual with schematics, layouts, voltage & resistance readings, and parts list. 5 pages Dated 1960. 10 tubes. Bogen-Presto Company. A Division of the Siegler Corporation of Paramus, NJ. This would make a sensational accompaniment to your vintage audio equipment.