David Looser wrote:
"Anton Gÿsen" wrote in message
...
The
"wall wart" PSU gets warm although it is encased in plastic.
It will, it's not a problem.
It's inefficient!

Even toroidal transformers get warm in use! If you are that bothered by
"efficiency" just leave the DAC permanently unplugged, then it will never
get warm :-)

Truth!