I'm trying to understand the use of the amplifiers in some of the schematics above.
In several of the amplifiers there are preamp sections that do not use emitter degeneration but are configured as CC. V3B is one example. I'm a bit unsure why a capacitor was not added across the emitter resistor.
I've seen similar circuitry used for the input tube where no emitter resistor was used at all such as the supro Amp or the silvertones with no emitter degeneration at all.
From what I understand the "emitter degeneration" is actually used to create a stable bias for the tubes essentially lifting the emitter up a few volts which effectively lowers the gate a few volts. This allows input singles with no DC have full swing instead of being clipped.
Even more confusing is the input stage into the power amplifiers. This looks to be class B, i.e., push pull, with the input stage being a cathode coupled paraphase amplifier. What I don't understand is how the gate's are creating the 180 out of phase signals that are driving the power stage.
Any thoughts on whats going on?