Stereo

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Label for 2.0 sound, Stereo

Stereophonic sound, also simply called stereo, is the reproduction of sound using two or more audio loudspeakers. This creates a pleasant and natural sound heard from various directions, as in natural hearing.

The word "stereophonic" comes from Greek stereos = "solid" and phōnē = "sound". It was coined by Western Electric.

In popular usage, stereo usually means two-channel sound recording and sound reproduction using data from two speakers. The electronic device for playing back stereo sound is often called "a stereo".