PX4 Osram Shoulder shape ST chrome plate wide blue logo full cup getter AC044 PP3/250 pair

Description

The PX4 is a super-power output valve for powerful receivers, capable of driving moving coil and large speakers at full volume.

Type PX4 is a directly heated power triode for the output stage of receivers and amplifiers where a considerable undistorted power output is required with an anode voltage up to 300. For this purpose the PX4 valve has exceptionally good characteristics  and is particularly suitable for operating moving coil speakers at large volume without distortion.The filament of the PX4 is of the robust oxide coated type and may be heated from A.C. through a suitable step-down transformerFilament Voltage 4Filament Current 1.0 ampAnode Voltage 300Grid Voltage -42Anode Current Average 50mAAudioMagical tries to cover all PX4 type made from the beginning of 1929 up to the 1960sOsram PX4 ST fat shape needs no presentation.We have tried to cover as many variation as possible.

Pair of Osram PX4 ST fat shape chrome plate with full getter same construction.

The pair you are going to buy has been tested atPX4 Osram 55mA 100%PX4 Osram 57mA 100%