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Dolby B NR Metal Tape

This Sharp RT-31 is a stereo cassette deck with Dolby B noise reduction, it was first sold by Sharp in 1981 with a list price of USD $150 and discontinued 4 years later in 1985.

The main features of the Sharp RT-31 cassette deck are: 2 heads, tape type selection and capable of handling normal, chrome, ferro-chrome and metal tapes.

Typical front loading cassette deck.

The Dolby-B system reduces tape hiss on tapes recorded on the Sharp RT-31 by as much as 10 dB at the highest frequencies.

Compact Cassette

Historic events

1981 IBM introduces the IBM PC.
1982 Dolby HX introduced by Dolby Laboratories
1983 Series The "A-Team" with Mr T premieres on TV.
1984 Apple Computer introduces the Macintosh.
1985 Microsoft announces Windows 1.0.

Features of Sharp RT-31

Cassette Exterior
Exterior
Front Loading Silver Finish
Compact Cassette
General
Stereo
Head Configuration
Head Configuration
4 Track / 2 Channel 2 Head Desiǥn
Noise Resuction
Noise Reduction
Dolby-B Noise Reduction
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Normal Tape Capabilıty Chrome Tape Capabilıty Ferro-Chrome Tape Capabilıty Metal Tape Capabilıty
Transport
Transport
Belt Drive (Capsŧan)

Similar to Sharp RT-31 from the period 1981 - 1985