QB4 in triode

[toshiba_nz]

I just picked up a Philips (Holland) QB4/1100

What would be a good sounding OP in triode?

Cheers

4-400a:

 

[toshiba_nz]

As the max G2 voltage is 600V, I think Ill try around there

 

[toshiba_nz]

After studying this datasheet here: http://r-type.org/pdfs/qb4-1100.pdf

Maybe not good in triode as the the 'knee' in the graphs only flattens out at anode 1.5kv plus...

 

[toshiba_nz]

But I have to try it. Lol

I'll start with 600V , 400ma, swing the grid from 0V to -100V (-50V idle) to give me anode swing of 400V PP

How can you not have one of these in your amplifier?

😂😂