Hitachi D-75s
Dolby B NR Metal Tape

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 cassette deck 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 Hitachi D-75s cassette deck are generic digital peak reading meters.

The Dolby-B system reduces tape hiss on tapes recorded on the Hitachi 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.

Compact Cassette

Historic events

1979 Philips introduced the Video 2000-system (also known as 'Video Compact Cassette' or VCC)
1980 Dolby C Noise Reduction introduced by Dolby Laboratories.
1981 Dave Smith proposes the Universal Synthesizer Interface that would become the MIDI standard in 1983.
1982 Seiko introduced the world’s first TV watch.
1983 The Musical Instrument Digital Interface (MIDI) is introduced at the first North American Music Manufacturers (NAMM) show in Los Angeles.
1984 The first episode of the Miami Vice television crime drama series, premiered on NBC.
1985 Sony and Philips produced the standard for Compact Disc Read Only Memory (CD-ROM) computer discs that would use the same laser technology as the audio CD.

Features of Hitachi D-75s

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors Headphones
Display
Display
3-Digıt Mechanical Counter Digital Peak-Reading Meters
Cassette Exterior
Exterior
Silver Finish Orientation Left Front Loading
Compact Cassette
General
Stereo
Head Configuration
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Cassette Back Lighting
Noise Resuction
Noise Reduction
Dolby-B Noise Reduction MPX Filter
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Normal Tape Capabilıty Ferro-Chrome Tape Capabilıty Chrome Tape Capabilıty Metal Tape Capabilıty
Transport
Transport
Auto Shutoff Belt Drive (Capsŧan) Mechanical Tape Loading

Similar to Hitachi D-75s from the period 1979 - 1985