TDK Synchro Cassette C-60 1966-1967 Japan
TDK Super Dynamic C-60 1968-1971 TDK SD "The Tape That Turned the Cassette Into a High-Fidelity Medium" TDK Super-Dynamic tape cassettes were the first to make it possible to achieve high-fidelity cassette recordings comparable in sound-reproduction quality to open-reel tape. This is accomplished through use of gamma ferric (SD) oxide, TDK's exclusive high-resolution, high-efficiency magnetic coating material. For quality sound reproduction on tape players with normal or low-noise bias, Super-Dynamic cassettes offer the following features: - Frequency response from 30 to 20,000 Hz - High saturation levels (MOL) for outstanding "real-life" sound - Very broad dynamic range - Very high signal-to-noise ratio - Lowest noise - Minimum distortion - No shedding or head wear - High-reliability, jam-proof construction. SD cassette housings are made of high-impact, heat-resistant styrene plastic of the finest quality, assembled with screws. They are packed in factory-sealed...
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