"Killer" Screen Driven Push-Pull Amp Initial Queries

[wrenchone]

With the triode/Jfet input solution in mind, I'm going to spend some time tracing load lines to make sure that the Jfets will survive even under extreme overload/overdrive (happens all the time...) I may need to add clamps on the Jfets to protect them. The Jfet/triode combination is not the most cascodey of cascode solutions, as the Jfet drains will wander around some with drive extremes. but I'm more interested in protecting the Jfets than I am providing an ideal cascode environment. If I use Jfets like the PN4393 and J309/310 with low miller capacitance, this will not be a big concern. With the 2SK170s, I'd have to look into it a little more.