Sony TC-K670
Dolby B NR Dolby C logo Dolby HXPro Full Logic Metal Tape 3 Head

This Sony TC-K670 is a stereo cassette deck with Dolby B/C and HX-Pro noise reduction, it was first sold by Sony in 1991 with a list price of USD $350.

The main features of the Sony TC-K670 are: 3 heads and off-tape monitoring, digital tape counter with 4 digits, automatic tape type selection and capable of handling normal, chrome and metal tapes, belt driven dual-capstan transport.

Typical front loading cassette deck with the cassette compartiment located on the left side of the deck. Tape loading/unloading is operated motorized and the cassette needs to be placed with the side to be played facing forward in the cassette well.

Level meters used on the TC-K670 are generic digital peak reading meters. Full-logic transport controls used on the TC-K670 let it respond to the slightest finger contact for fast and effortless transport function selection.

To ensure the best response from the wide variety of tapes available adjustment of, bias and sensitivity, to optimum levels can be performed prior to recording.

Dolby C-type used in the TC-K670 provides 20 dB of noise reduction above about 1,000 Hz, fully doubling the amount given by B-type. The Dolby HX PRO system provides precise bias control during recording to reduce distortion and improve linearity in the high-frequency range, the result is recorded sound that is highly faithful to the original.

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 Motor Transport Mechanism
  • Peak Level Meter
  • Closed Loop Dual Capstan
  • AMS (Automatic Music Sensor)
  • 3 Head

Historic events

1991 Invention of the MP3 digital audio format

Features of Sony TC-K670

Calibration
Calibration
Manual Bias Calibration Manual Level Calibration
Connectors
Connectivity
AC Power Cord / Plug RCA Input/Output Connectors Headphones
Display
Display
Digital Peak-Reading Meters 4-Digıt Digital Counter
Electronics
Electronics
Record Protection
Cassette Exterior
Exterior
Orientation Left Black Finish Front Loading
Compact Cassette
General
Stereo
Head
Head Configuration
3 Head Desiǥn 4 Track / 2 Channel
Indicators
Indicators
Record Mute Cassette Back Lighting MPX
HighCom NR
Noise Reduction
Dolby-B Noise Reduction Dolby-C Noise Reduction Dolby HX Pro®
Controls
Operation
Music Scan Full Logic Transport Control Timer Recording/Playback Real-Time Tape Monitoring
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
Record Level Balance Control Master Record Level Control Headphone Volume Control
Limited Finish
Special Finish
Gold-Plated Headphone Jack
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Automatic Tape Type Selection Normal Tape Capabılity Chrome Tape Capabılity Metal Tape Capabılity
Transport
Transport
Motorized Tape Loading Auto Shutoff Dual-Capstan Transport Belt Drive (Capsŧan)

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