The British electrical standards are the dumbest on planet, or at
least the dumbest I have ever run into. Except for the Japanese, who
are combine the worst possible voltage standard with two different
frequencies.

In the US, we have two voltages in (all but really really old)
houses: 120 and 240, although most outlets are 120, the ranges,
clothes dryers and air conditioners are 240. And that 240 is balanced.
If we were SERIOUS audiophiles, we'd have 240 volt four pin dryer
outlets put in our listening rooms and run our power amps on 240.