Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
They are sensitive to load impedance, that is true. The parallel feed configuration seems a little less so, perhaps since the transformer is resonated with the parafeed cap down low. Then again, I suppose a big output transformer can be used on a standard configuration to drop output impedance and make the system less sensitive. There have been some pretty substantive discussions about output transformers on this very subject. I guess that's probably the most important thing, maybe even more so than the output tube.