Loud is an understatement, I wear ear protection when I'm physically in the room for more than a minute. And indeed, the power supplies run on ~200V, my house

Loud is an understatement, I wear ear protection when I'm physically in the room for more than a minute. And indeed, the power supplies run on ~200V, my house serendipitously is wired with a dedicated 240V/50A circuit because the previous owner did glasswork and had a massive electric kiln.