They absolutely have a house sound, I've listened to easily 75 setups over the last 20 years. The sound is detailed (above average to very detailed depending on model), open, very focused, spacious. The negative for many, including me, is that they are typically lean (this is not room-related, or system-related, it is positively a trait) and can strike many folks as fatiguing. They fatigue me in a way that live chamber, symphonic, jazz, blues do not. This is why I don't use them.
Beautifully built.