The SS plate load sounds good. A few have asked me about unity gain linestages. Some of my friends have TX linestages. I think the buffer is a critical part of the job.Sooooo, how simple can it get? The cascode is a complication, but it gets around the variable capacitance induced by varying D-S voltage, and G-D voltage.
Partially, it is an experiment to take something which is not 'supposed' to sound good and demonstrate the conventional wisdom isn't so wise afterall. Like PP Pentodes, no?
regards,
Douglas