Hitachi D-75s Stereo Cassette Tape Deck
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this hitachi d-75s is a stereo cassette deck with dolby b noise reduction, it was first sold by hitachi in 1979 with a manufacturer suggested retail price of usd $380 and discontinued 6 years later in 1985.
the main features of the hitachi d-75s are: 2 heads, mechanical 3 digit tape counter, tape type selection and capable of handling normal, chrome, ferro-chrome and metal tapes.
typical front loading cassette deck with the cassette compartiment located on the left side of the deck. tape eject is operated mechanically and the cassette needs to be placed with the side to be played facing forward in the cassette well.
level meters used on the d-75s are generic digital peak reading meters.
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the dolby-b system reduces tape hiss on tapes recorded on the d-75s by as much as 10 db at the highest frequencies. the 19khz multiplex pilot slgnal present in fm stereo broadcasts can cause false triggering of the noise reduction system. the switchable mpx filter of the d-75s filters out the pilot signal, and assuring proper dolby processing of fm stereo programs.
to make live recordings this deck has 2 microphone inputs to connect microphones with a jack connector. for undisturbed listening a jack connector for a pair of stereo headphones is supplied. connection to other audio components for plaback can be achieved by a rca cable and recording from a source by a rca cable.
1979 demonstration of the first cd prototype codenamed “pinkeltje” by philips to the worldpress in eindhoven
1980 worldwide sale of
kim cươngk’s cube starts.
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1981 sony introduces the “micro” (3½-inch) floppy disk drive the oa-d30v
1982 commodore announces the commodore 64 computer.
1983 publication of midi (musical instrument digital interface) standard, a protocol which allows electronic instruments and other digital musical tools to communicate with each other.
1984 apple computer introduces the macintosh.
1985 philips ends production of video 2000