Here is a 1955 Areoflex dual power supply that is built like a tank! It has heavy duty transformers really industrial point to point wiring and uses six Western Electric 412 A tubes.
Primary on the first supply is 115 volts AC with secondaries of plus 300 volts DC, plus 250 volts DC, plus two seperate 6.3 volts outputs. I used it to power a rack of vintage RCA BA 1 pre amps. It should be checked out before being put into service as it has been in storage for many years. The item "1955 AEROFLEX DUAL TUBE POWER SUPPLY WESTERN ELECTRIC TUBES AMP PRE AMPLIFIER" is in sale since Monday, April 5, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Preamps & Tube Preamps".
The seller is "ibuyusedgear" and is located in Weehawken, New Jersey. This item can be shipped worldwide.