Native name
TYO: 6794
IndustryElectrical equipment
FoundedJune 1, 1948; 76 years ago (1948-06-01) (as Foster Electric Company, Ltd.)
1973 (as Fostex)
  • Shigeaki Nishimura
  • Hiroaki Hagiwara
Key people
Hirozo Yoshizawa (President and CEO)[1]
Number of employees
50,000 (2019)
ParentFoster Electric Company

Foster Denki KK (フォスター電機株式会社, Fosutā Denki kabushiki kaisha) is an electronics company that manufactures loudspeakers and audio equipment for other companies or sells them under the trade name Fostex. It is traded on the Tokyo Stock Exchange.[2]


Foster Denki supplies audio equipment as an OEM:


Foster Denki was founded in 1948 and became one of the largest OEM manufacturer of loudspeakers and transducer products worldwide. Fostex was then established in June 1973 to brand components manufactured by Foster Electric.

In 1978, Fostex [1] started to develop speakers for professional use, becoming very well known in both consumer hi-fi and professional fields. Fostex 6301B was the company's most small powered monitor speaker for broadcast and professional use.[2]

1980s: Analog multitrack recorders

Fostex B-16 recorder

From 1981, Fostex and TASCAM pioneered affordable multitrack recording equipment producing the A-2 and the A-4 reel-to-reel recorders; the A-8 was the first eight-track recorder that used affordable ¼ inch tape, becoming a popular choice in the freelance and home recording field.

Another popular product was the Fostex 250 four-track cassette multitracker: it used standard cassettes running at double speed (3¾ ips), which improved high frequency response and dynamic range. To obtain four tracks from a standard cassette, all the four tracks available were used in one direction (normally, two tracks are used in each direction). Dolby C noise reduction was used.[3]

In 1983, Fostex released the X-15, a portable, battery-powered, cassette-based four track recorder and the B-16, a very compact recorder which fitted 16 tracks onto ½ inch tape running at 15 ips speed. Dolby C was built into the machine as an option to overcome the technical limitations due to the narrow track format.[4]

The B-16 was followed by the E-16 in 1986 and the G-16S in 1990, being the first recorder implementing the Dolby S noise reduction system. The G-24S was the last analogue multitrack machine, which fitted 24 tracks onto 1 inch tape and included built-in SMPTE/MIDI synchronization and a removable front panel remote control and meter bridge.

1990s: Digital multitrack recorders

MR8 multitrack hard disk recorder (2003)[5]

As digital technology progressed in the audio field, Fostex moved from analogue tape-based recorders to digital, drive-based recorders.

The Fostex DMT-8, released in 1995, was the first portable and affordable digital recorder. It provided eight tracks of 16-bit, 44.1kHz audio recorded to hard disk, non-destructive editing capabilities, a built-in metronome and MIDI clock output for synchronization with other machines.[6] The FD-4 and FD-8 were variants which added support for Zip and SyQuest removable drives.


D2424LV 24-track hard disk recorder (2001),[7] DV824 8-track DVD recorder (2004),[8] CR500 CD-R/RW master recorder, RM-2 stereo rack monitor

Fostex's current product range includes digital multitrack recording equipment, loudspeaker drivers, studio monitors, microphones, and headphones.

Some production sound mixers for motion pictures use the Fostex Field Memory Recorder (FR-series and PD-series), which records audio and stores recordings as WAV files, as their recording device for sync sound.

Fostex has expanded its offering of hi-fi based products to include high-end headphones (TH-series), digital audio converters (HP series) and devices for portable listing. Fostex's T50RP model has become popular in headphone modification circles.[9]


  1. ^ "フォスター電機[6794] - 役員 | Ullet(ユーレット)". (in Japanese). Retrieved 2019-10-22.
  2. ^ a b "Fostex Company History". Fostex International. Retrieved 2019-08-10.
  3. ^ Lockwood, Dave (May 1984). "Fostex 250 Multitracker (HSR May 84)". Home & Studio Recording (May 1984): 10–13. Retrieved 2019-08-10.
  4. ^ Gilby, Ian (January 1984). "Fostex B16 Tape Recorder (HSR Jan 84)". Home & Studio Recording (Jan 1984): 28–31. Retrieved 2019-08-10.
  5. ^ "Fostex MR8". Retrieved 2019-10-22.
  6. ^ "The Fostex DMT-8 Digital Hard Disk Recorder/Editor". Sweetwater. Retrieved 2019-08-10.
  7. ^ "D2424 Hard Drive Recorder". Retrieved 2019-10-22.
  8. ^ Staff, ProSoundNetwork Editorial. "Fostex Launches DV824 Digital Recorder". Retrieved 2019-10-22.
  9. ^ "How to Mod the Fostex T50RP MK3". Headphonesty. 2019-07-08. Retrieved 2019-08-10.

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