• Country
• United States of America (USA)

• Manufacturer / Brand
• Audio Research, Plymouth

• Year
• 1974

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 148511

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 800 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Dual 400 - Audio Research, Plymouth

• Notes
• Three chassis tube stereo power amplifier. 400 watts per channel.
  This was a development model only and was never marketed.
  Looks like it had 8 output tubes per channel (probably 6550s).
  The amplifier has been mentioned in the following magazines:
  Audio Amateur, 3/75 (USA), Radio&Television, Nr.3 1974 (Sweden).

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 37 models, 14 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Audio Research, Plymouth