Marantz SD640 Digital Monitoring Cassette Deck
This Marantz SD640 is a auto-reverse stereo cassette deck with Dolby B and C and DBX noise reduction, it was first sold by Marantz in 1984 with a list price of USD $330.
The main features of the Marantz SD640 are: 2 heads, digital tape counter with 4 digits, tape type selection and capable of handling normal, chrome and metal tapes.
Typical front loading cassette deck with the cassette compartiment located on the left side of the deck.
Level meters used on the SD640 are generic digital peak reading meters.
Dolby C-type used in the SD640 provides 20 dB of noise reduction above about 1,000 Hz, fully doubling the amount given by B-type. Dbx Type II found in the SD640 is a simplified version of the Type I noise reduction system. The dbx Type II system was designed to be used with systems with limited bandwidth such as cassette based recorders and also uses a simple 2:1:2 compander to reduce noise.
- Multi Function Digital Counter
- Quick Music Sensor System
Historic events
Features of Marantz SD640
Digital Peak-Reading Meters
4-Digıt Digital Counter
Record Protection
Orientation Left
Champagne Finish
Front Loading
Stereo
2 Head Desiǥn
4 Track / 2 Channel
Dolby-B Noise Reduction
Dolby-C Noise Reduction
DBX Type II Noise Reduction
Alternating Current
1⅞ ips - 4.76 cm/s
Normal Tape Capabılity
Chrome Tape Capabılity
Metal Tape Capabılity
Auto Reverse
Auto Shutoff
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Similar to Marantz SD640 from the period 1984
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