Lo-D D-900
Dolby B NR Full Logic 3 Head

The Hitachi D-900 is a stereo cassette deck with Dolby B noise reduction, it was introduced by Hitachi in 1978 with a list price of USD $529 and discontinued 4 years later in 1982.

The main features of the Hitachi D-900 are: 3 heads and off-tape monitoring, analog 3 digit tape counter and memory stop, manual tape type selection with support for normal, chrome and ferro-chrome tapes with additional manual equalization selection, belt driven dual-capstan transport.

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-900 are analog needle VU reading meters. Full-logic transport controls used on the D-900 let it respond to the slightest finger contact for fast and effortless transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the D-900 by as much as 10 dB at the highest frequencies. To further maintain recording accuracy, the D-900 incorporates a switchable multiplex filter. When you record FM stereo broadcasts, the MPX filter of the D-900 can be swiched on to prevent the standard 19kHz FM pilot signal from interfering with the noise reduction system.

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
  • 3 Head System
  • 3 Head System
  • D.C.C.S.
  • Logic Control System
  • Logic Control System
  • D.C.C.S.

Historic events

1978 Nintendo releases its first video game, Computer Othello.
1979 The video game "Asteroids" is created.
1980 Pac-Man arcade game developed by Namco released in Japan.
1981 The first DeLorean DMC-12 rolling off the production line
1982 Sony and Philips announce the CD (Compact Disc) in Tokyo

Features of Hitachi D-900

Connectors
Connectivity
2 Mono Microphone Inputs RCA Input/Output Connectors DIN Input/Output Connector Headphones
Display
Display
3-Digıt Mechanical Counter Meters Peak / VU Switchable Analog Needle Meters
Cassette Exterior
Exterior
Silver Finish Orientation Left 19-Inch EIA Rack Mounting Front Loading
Compact Cassette
General
Stereo
Head
Head Configuration
3 Head Desiǥn 4 Track / 2 Channel
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter
Controls
Operation
Full Logic Transport Control Memory Stop Real-Time Tape Monitoring
Preamplifier
Preamplifier
Microphone Level Adjust (Left/Right) Individual Input Level Controls Output-Level Control
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Manual Tape Type Selection Ferro-Chrome Tape Capabılity Normal Tape Capabılity Manual Tape Equalization Chrome Tape Capabılity
Transport
Transport
Auto Shutoff Mechanical Tape Loading Dual-Capstan Transport Belt Drive (Capsŧan)

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Last update on Feb 27, 2024 12:12:02 PM CET

Similar to Hitachi D-900 from the period 1978 - 1982