Ampex Theatre Amplifier Power Supply Model 6450 Tested Working. Extremely well made dual power supply. 2 separate power supplies built on one chassis for stand-by switchable. Each  power supply generates plate voltages approx 385v and neg 60v. See pics for exactly what you are purchasing. Very good unit. Totally original. It does function properly but capacitors are as old as the unit and may require replacement for long term use. This version was made for the army air force and has the fungus proof lacquer coating. Pilot light is working and fuses and tubes are included.