Are two separate speakers really better than one boombox or soundbar?

We are firm believers that two quality speakers will always sound better than one or more speakers together in a single cabinet, regardless of the amplifier or sound enhancing technology used. There are some decent one-piece speaker systems that simulate stereo and surround sound from a single source, but most fall way short as they can’t accurately duplicate a wide sound stage with imaging as complete and rich as Audioengine speakers.