Denon DRS-640

Data

General

• Manufacturer: Denon
• Model: DRS-640

Type: Cassette Tape Deck

• Years of manufacture: 1994 - 1999
• Made in: Japan, China
• Color: Black, Nickel Silver (Champagne)
• Remote control: in the Denon system remote controllable
• Power consumption: 18 watts
• Dimensions: 435 x 122 x 310 mm (W x H x D)
• Weight: 5.4 kg
• Original price: 530 DM (1998: compare Audio 7/1998, p.15; 1994: Hifi Vision 7/1994, p.44, Stereo 7/1994, p.22)

Connections

• Inputs:
  • Line (2x RCA RCA).
• Outputs:
  • Line (2x RCA cinch)

Headphone (RCA cinch)

Technical Data

• Audio heads: 2
• Motors: 3
• Belt speed: 4,75 cm/ s
• Synchronization fluctuations: ± 0.06 % (WRMS), 0.10 (DIN, rated; cf. Stereo 7/1994, p.19).
• Band types: Type I / II / IV
• Frequency response:
  • Metal: 25 - 18,000 Hz
• Distortion factor (band type IV):
• Signal-to-noise ratio (band type II):
  • 74 dB (Dolby C)
• Dolby: HX-Pro / B / C
• MPX filter: yes, switchable

Special Features

• Cassette deck with turntable in horizontal design, with out-running drawer as with CD players
• Bias fine tuning
• Headphone output
• Timer pre-equipment for recordings/playback to be programmed

Other

• Electronic drive control
• Single-capstan drive
• Counter: electronic, 4-digit, with memory stop
• Auto-Reverse: no
• Title search:
• Fader/Mute: no
• Pitch control: no
• CD synchro recording: yes

Comments

• Technically related to Harman/kardon TD 420 and Harman/kardon TD 450 (both also with horizontal drive, same belts are used).
• Other models in the same series:
  • DRS-610
  • DRS-640
  • DRR-780
  • DRS-810

Pictures

• Image: Denon DRS-640

Reports

• Stereo 7/1994: major comparison test: satisfactory, no star. "Plus: uncolored sound with single layer tapes. Minus: not particularly low-noise, risk of hum due to plastic housing" (Stereo 7/1994, p.22).
• Hifi Vision 7/1994, comparison test. Overall rating good. Sound, features and workmanship 70 % each.
• Audio 7/1998: (last) comparison test for cassette decks by Audio: middle class, 2 ears. Sound 55 points. Workmanship and operation good, features satisfactory, price/performance: satisfactory.

Links

Comparative test, see website "Revoxsammler": Stereo-Vergleichstest 1994.