An optional reproducer "upgrade" was inspired by the soundbox used on Disc Graphophones. When sold with this reproducer, it was known as the model AW.
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Columbia Model AO
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The Columbia Model
AO was available from 1902 - 1904. This machine sold for $30.00 with an ornate cabinet, 14
inch aluminum horn, and a powerful triple spring motor. The machine utilized a floating
aluminum reproducer. An optional reproducer "upgrade" was inspired by the soundbox used on Disc Graphophones. When sold with this reproducer, it was known as the model AW.
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