Hi Jay, thank you for the clarification.
I mentioned that I was in the process of "verifying transistor selection".
In actual fact all I have done is drawn up the schematic with generic components and pushed their generic foot prints to the PCB, followed by a quick route.
The only thing that's complete is the size of the board and the position of the BNC's to suit the Hammond case I've chosen
I had noted you removed the protection circuits but decided to go without to simply see how it performed compared to the simulation and to the data you and Terra Operative collected.
I'll just have to be extra careful when testing.
Thanks for pointing out the 4 layer issue, I had missed that.
I originally went 2 layer but didn't save that version when I changed to 4 layers. Just some extra vias really so no big deal to change it back.
I have a different stack up so I might still go 4 layer just to see what happens as all my signals are on the top layer followed by Vcc, Vee and finally ground on the bottom.
I'll order both the 4 and 2 layer boards at the same time and enough components to do both. I like making mistakes, it's how I learn
LTspice shows current draw from the rails as less than 100mA so I may be able to use smaller regulators than the ones currently used for the final board. I'll leave it as is and test on the actual circuit first