@laoman For the record.... Testing a Leema Acoustics Dac. He plugged it into a 120 volt main and nothing happened - no output. It took him a half hour to work out it needed 230 volts. This is the man whose measurements some trust.
The measurements provided are what the audio analyser Audio Precision APx555 spits out.
It is not uncommon for people who are American to forget that much of the rest of the world operates on variants of 240V (220, 230) and 50 Hz.