"Jon Yaeger" wrote in message
...
It would seem offhand that an autoformer could have sonic advantages (e.g
lower losses, no coupling degradation, etc.).

Until you touch your speaker wires and suddenly realize that they are
floating around 400VDC. ;o)

An autotransformer is more turns-efficient than a transformer, true, but
the need for isolation and high turns ratio makes this useless. (Of
course the latter doesn't make any difference, it's just more of a 'why
bother' case.)

Tim

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