Harberth hifi speaker and studio monitor (30.1 adn 40.1)

Hi, I am thinking to setup a my another living room with minimalist approach, i.e (DAC +control amplifier) + active speaker. And I am looking at harbeth active speaker (studio monitor) . Does anyone know what is the sonic difference between the harbeth speaker and studio monitor ?
You should post this on the Harbeth forum. I've never heard of a regular user interested in a studio monitor. Why would you even consider this approach? I'm not trying to be a jerk, I have no idea.