stereophonic

/ˌstɛriəˈfɑnɪk/
adjective
  1. Relating to sound that is directed through two or more channels to create a more natural, three-dimensional effect, as if the sound is coming from different directions.
    • The concert was recorded in stereophonic sound, making it feel like you were in the audience.
    • My grandfather still prefers his old stereophonic record player over modern speakers.
    • The movie theater upgraded to a stereophonic system for a more immersive experience.
Antonyms
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