Radio constructor: Class A low frequency amplifier with 3W output power

A simple and reliable two-stage ULF for operation in conjunction with the high-frequency paths of the Tube DIY Kit radio constructors.
It can also be used as a standalone design.
The output power is about 3W.
Load resistance: 8-16Ω.
Consumption:
Anode: 250V, no more than 45mA.
Incandescent: 6.3V, no more than 1A.
Board size: 125 x 80 mm.
The kit is supplied as a printed circuit board and parts kit.

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