Here’s an unusual SET amplifier from Oliver Sayes. The output tubes are 6HJ5, these are Beam Power pentodes (Triode wired). The drivers are 6N7s and the unusual rectifier is a 5R4WGB. Lundahl & UTC iron and Dueland Coupling caps. The 6HJ5 characteristics are very much like a 2A3 and the output power is very similar as is the sound.
Posted by DRHamp as Audio at 4:02 PM GMT-0500