Each on of my amps running all year costs less than their idle Prius charger hanging on the wall costs them for one month.
An idle Prius charger draws less than two Watts. Your box fan uses a lot more power than that, let alone any amp that needs to be cooled down by one.
I admit that I will occasionally leave my Pass XA60.8s powered on over night if I’m planning a critical listening session the next day, but generally switch them to standby when I’m not listening. But I had to call you out on your rediculous statement.