We will soon hear more about because computer monitors and television sets with picture tubes are no longer in production.There's not really a lot to say about this. Running outputs in multiple
series/parallel is pretty straightforward, although you have to compensate
the frequency stability of some systems as you apply more series stages.
Therefore - so I guess - that also all BjT devices for small/medium signals with high Vce like the mentioned types from post #1 about
http://www.diyaudio.com/forums/soli...ver-stages-high-power-amplifier-overview.html
are obsolete and no longer available in a relatively short time.