Hitachi D-2750
Dolby B NR Dynamic Noise Limiter (DNL)

This Hitachi D-2750 is a stereo cassette deck with Dolby B and DNL noise reduction, it was first sold by Hitachi in 1975 and discontinued 2 years later in 1977.

The main features of the Hitachi D-2750 are: 2 heads, mechanical 3 digit tape counter and memory stop, manual tape type selection and capable of handling normal tapes, belt driven single-capstan transport.

Typical of this deck is the 70's top loading layout with the cassette compartiment located on the right 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-2750 are analog needle VU reading meters. Mechanical transport controls for reliable D-2750 transport function selection.

The Dolby-B system reduces tape hiss on tapes recorded on the D-2750 by as much as 10 dB at the highest frequencies. Unlike the various Dolby systems, which require encoding and decoding, the Dynamic noise limiter (DNL) used by Hitachi in the D-2750 works on playback only and reduces noise by as much as 10 dB.

For undisturbed listening a DIN connector for a pair of stereo headphones is supplied.

Compact Cassette

Historic events

1975 Sony launched the Betamax videocassette recording format.
1976 Sony first publicly demonstrated an optical digital audio disc
1977 Steve Jobs and Steve Wozniak exhibiting the first Apple II

Features of Hitachi D-2750

Connectors
Connectivity
2 Mono Microphone Inputs Headphones
Display
Display
3-Digıt Mechanical Counter Analog Needle Meters
Cassette Exterior
Exterior
Orientation Right Top Loading Black Finish
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Record
HighCom NR
Noise Reduction
Dolby-B Noise Reduction DNL Noise Reduction
Controls
Operation
Mechanical Transport Control Memory Stop
Preamplifier
Preamplifier
Individual Input Level Controls
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Normal Tape Capabılity Manual Tape Type Selection
Transport
Transport
Sìngle Capsŧan Transport Belt Drive (Capsŧan) Mechanical Tape Loading Auto Stop

Similar to Hitachi D-2750 from the period 1975 - 1977

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