The words Stereo phone comes from the Greek words Greek stereos = “solid” and phōnē = “sound”. Making the words ‘solid sound’ Pretty crazy right? The main difference between Stereophonic and Monophonic production is that Stereo (or Stereophonic sound) is the reproduction of sound using two or more independent audio channels in a way that creates the impression of sound heard from various directions, as in natural hearing. Mono (Monaural or monophonic sound reproduction) has audio in a single channel, often centered in the “sound field”. Stereophonic technology was invented in the 1930s by British engineer Alan Blumlein. He made stereo sound, films and surround sound. The main purpose of stereophonic sound is to create a multi directional listening experience. As opposed to monophonic sound, which uses only one channel of transmission. The picture below shows a visual representation of what Stereophonic sounds were to look like if the stuff that you cannot see was able to be seen. It’s like almost hallucinating from the sound waves, which in all honesty, is a very probable occurrence within the right circumstances.