It's been quite a while since a new project is born
When I got hold of some pairs of 56 tubes, I thought of using them in my pre-amp project. However, since I like the sound of the JE Labs 300BDX with a 76-6SN7-300B topology, I thought of making a 56-2A3 direct-coupled.
I used my DC Designer spreadsheet, and if the calculations are correct, then this is the design
There will be a 470K resistor from the driver grid to ground.
This is experimental and I hope I don't blow up the tubes, he he he
Any comments from anybody? jm? mickey?