Fostex D-20 Digital Master Recorder

Fostex D-20
The Fostex D-20 DAT Recorder is a professional DAT-based digital master recorder that delivers reliable two-track recording with full timecode and synchronisation support. Combining digital accuracy with analogue-style operation, it became a trusted solution for mastering and programme recording in studios and broadcast facilities during the early professional DAT era.

Fostex D-20 Digital Master Recorder Details

The Fostex D-20 DAT Recorder is a professional two-track digital master recorder designed around the DAT standard for studio, broadcast, film, and television use. Built to operate with the familiarity of a conventional analogue reel-to-reel master recorder, the Fostex D-20 combines digital precision with a traditional transport-based workflow, making it suitable for engineers transitioning from analogue recording environments.

At its core, the Fostex D-20 employs a four-head rotary DAT transport system. This design enables off-tape monitoring, seamless punch in and punch out operation, and independent recording of SMPTE or EBU timecode. The heads are arranged to allow precise tape handling and accurate editing, with separate leading and trailing head pairs supporting both recording and playback functions.

The recorder supports 16-bit linear digital recording at selectable 44.1kHz and 48kHz sampling rates, using standard metal powder DAT cassettes. Error correction is handled using Double Reed-Solomon coding, ensuring reliable data integrity during recording and playback. The DAT format allows long recording times of up to 120 minutes on compatible tapes while maintaining consistent audio quality.

Professional connectivity is provided throughout. Balanced analogue inputs and outputs are presented on XLR connectors, with nominal operating levels aligned to professional studio standards. AES/EBU digital input and output are also included on XLR connectors, allowing direct digital interfacing with mixers, converters, and digital routing systems. Monitor and headphone outputs are provided for direct signal auditioning.

For synchronised operation, the Fostex D-20 includes SMPTE and EBU timecode input and output, a dedicated BNC sync input, and parallel interface connections for use with external synchronisers such as the Fostex 4030. An RS-422A remote control port is also provided, enabling integration into larger automated or remote-controlled systems.

Designed as a rugged and reliable professional recorder, the Fostex D-20 became widely used as a digital stereo mixdown recorder, mastering deck, and synchronised digital slave machine in professional recording, broadcast, and post-production environments.

Features

  • Professional two-track DAT digital master recorder
  • Four-head rotary DAT transport design
  • Off-tape monitoring capability
  • Seamless punch in and punch out operation
  • Independent SMPTE and EBU timecode recording
  • Selectable 44.1kHz and 48kHz sampling rates
  • 16-bit linear digital recording
  • Balanced analogue inputs and outputs on XLR connectors
  • AES/EBU digital input and output
  • External sync and parallel interface support
  • RS-422A remote control capability
  • Designed for studio, broadcast, film, and television applications

Specifications

Released in: 1990
Made in: Japan
  • Error Correction: Double Reed-Solomon code
  • Tape Speed: 8.15mm per second
  • Recording Time: Maximum 120 minutes with 120-minute tape
  • Fast Forward And Rewind Time: Approx. 80 seconds with 120-minute tape
  • Cassette Tape Type: Metal powder DAT cassette
  • Sampling Frequency: 44.1kHz or 48kHz selectable
  • Quantization: 16-bit linear
  • Dynamic Range: More than 90dB at 1kHz
  • Frequency Response: 20Hz to 20kHz
  • THD: Less than 0.05%
  • Wow And Flutter: Less than ±0.002% peak weighted
  • Channel Separation: More than 80dB
  • Rated Analogue Input And Output: +4dBu (0dBu = 0.775Vrms)
  • Analogue Audio Inputs: XLR 3-31, +4dBu nominal, +22dBu maximum, 20kΩ balanced
  • Analogue Audio Outputs: XLR 3-32, +4dBu nominal, 600Ω or more balanced
  • Monitor Output: Standard phone jack, 0dBu, 10kΩ or more
  • Headphone Output: Standard stereo phone jack, 100mW into 32Ω
  • Dimensions: 150mm x 482mm x 472mm
  • Weight: Approx. 15kg
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