The Hitachi D-55 S is a cassette tape deck manufactured by Hitachi from 1979 to 1981 in Japan. It features a silver-colored casing, reflecting a classic design of its era. With a power consumption of 10 W, it is designed to fit a standard shelf space with dimensions of 435 mm in width, 110 mm in height, and 267 mm in depth, weighing 5.4 kg. The original price was approximately 49,800 Yen in Japan, which is about 700 DM. The D-55 S offers a variety of input options including a microphone input and multiple line inputs, with output options such as line out and headphone jacks. Its technical specifications include two audio heads and a motor that contributes to a low synchronous fluctuation of 0.05%. It supports three types of tape: Type I, II, and III, with a frequency response range of 30 Hz to 15 kHz for Type I and II, and up to 16 kHz for Type III. The device boasts a distortion factor of 1.2 and a signal-to-noise ratio of 57 dB when Dolby NR is off, and 65 dB when on. Notable features include a fluorescence display, SPSS music search system, and advanced crosstalk attenuation. Rewind time for a C-60 tape is around 100 seconds.
