All of these are fully balanced: Older Classe, including all the x00 and x01 models, all the T series Threshold; all the older Krell models, Mark Levinson, which run in class A; and some A/B amplifiers, some models, Cary, ARC, and Ayre; and many Edge/Maker, Pass, and Boulder, Burmester, Esoteric, BAT ss, there tube amps and VTL sig amps, for example. There are several late models where they are class A/B which are fully differentially balanced, Maker, Pass, Ayre to name a few.
Anthem, NAD, Rotel, and B&K are not, and Bryston seems to using the differential balanced signal, Parasound may also do this in some models, some McIntosh, yet does not output it, which is probably not a bad Idea. If you have to use short pins, it is usually internally balanced, and if it has a switch, it does have the differential balanced interface.
Anthem, NAD, Rotel, and B&K are not, and Bryston seems to using the differential balanced signal, Parasound may also do this in some models, some McIntosh, yet does not output it, which is probably not a bad Idea. If you have to use short pins, it is usually internally balanced, and if it has a switch, it does have the differential balanced interface.