It seems somebody is making up some funny rules that are not fair or right for the consumer.
Yes, or course traditional OTL's do not use RF impedance converters, traditional OTL amps were designed long before modern power conversion technology, maybe the best way to describe it all is in two categories.
Traditional OTL (TOTL)
Modern OTL (MOTL)
To say the Berning design is not a OTL is misleading, it's just not traditional OTL.
As for this statement
"while the output tubes of the Berning amplfier are coupled to the speaker through a Impedance Converter".
The answer is, not in the signal path, nor at audio frequencies, so why is it relevant, when there are OTL makers with a capacitive coupled design and that's not?
