- Categories: General Banter'Don't be daft, of course everyone knows what Stereo is' you say. But they don't! Let's start with a bit of very unscientific, non-empirical and very loosely recorded (one post-it note of 'data') market research. Essentially I phoned a few people up and just asked 'Do you know what stereo is? I also asked (depending on the answer to the first...