tube position identification question

[kip.duff]

The diagram shows the output tube as 7308- one of the tubes that came in the kit is labeled 12BH7A- is this the output tube?  I did not see data that shows 12BH7A is substitute for 7308.

 

[Paul Birkeland]

The 12BH7 is the power supply regulator tube, which goes in the hole by the power transformer.

The output tube is labeled as a 7308, but we supply a 6922/6DJ8.  This is the center tube of the front three sockets.

 

[kip.duff]

Thanks........