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Obsolete Sony on X: "Sony Super Metal Master was a high-quality cassette tape format introduced in 1993, which offered improved frequency response and signal-to-noise ratio. It was highly popular among audiophiles and
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Sony C-60 Metal Master with ceramic case | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air
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Sony C-90 SMM Super Metal Master | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air
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Sony Metal Master MTL-MST90c with ceramic case | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air
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