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The Philips Company of the Netherlands invented and released the first compact audio-cassette in 1962. They used high-quality polyester 1/8-inch tape produced by BASF. Recording and playback was at a speed of 1.7/8 inches per second.
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The next year in the U.S. sales began of the Norelco Carry-Corder dictation machine that used the new cassette tape. The consumer's demand for blank tape used for personal music-recording was unanticipated by Philips.
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The cassette was available in 2x 45 or 2x 90 minutes and run at 5.08cm/s, allowing a 40Hz to 10Khz frequency response.
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First cassette marketed for Hi-Fi market. TDK Super Dynamic.
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t was was the first "hi-fi" cassette recorder. It combined Dolby type B noise reduction and chromium dioxide (CrO2) tape, with a commercial-grade tape transport mechanism. This resulted in the format being taken more seriously for musical use, and started the era of high fidelity cassettes and players.
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High end metal cassettes were introduced: TDK MA-XG, Metal Vertex, Sony Metal Master, That's Suono.
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