That would be cool.

But, an 845 would probably be better over all.

Building a higher current tube on the heels of the 2A3 is more about maketing. The KR and VV varieties of the 300B comes to mind.

Obviously, the 2A3 is a highly coveted tube that has been produced for close to 70 years. Just imagine all of the 2A3 amplifiers in service over the years. Also, there is a group of the people who want the power of a 300B, but prefer the sonic flavor of the 2A3.

So, why not give it to them, build a modified 300B into a 2A3, right.

There is always a ready made market of audio enthusiast looking for something better.

I am guilty in the persuit of catching my tail. Some times I can get pretty dizzy.

Norris