-hibrid cascode diff. driver (triodes and Mosfets)
-2 CCS
-PP grid choke
-OPT with two UL taps - one for g2/pentode, other for E-linear feedback

Interesting, original, technically advanced, but simple and "direct" at the same time. Congratualation!

But, other file, "Buffer Linestage" is again "Merlin V2" - mistake.

P.S. Received today some electronics parts from Germany. Winter is coming, the right time for building new projects...