Building RE604 & LK460 single amps

RE604 & LK460 single amplifier completed.

The output is 2.3W.
Since the plate loss in the current operation is 10W,
Since the rating has been reached, we are thinking of improving it to the 90% level by the end of the year, even if it means sacrificing the output a little.
Either way, it sounds great, and I'd like to keep using it for a while.
The driver is 5693 and the rectifier tube is G2504.
When the time comes to change the filament circuit to a three-terminal regulator, I would like to make it a compatible amplifier that can also use PX4.

It's hot and hot and I don't have the energy, so I'm going to take it easy for a while.
The world is on Obon holiday.

I spend my time leisurely watching movies and organizing records (laughs).