• Country
• United States of America (USA)

• Manufacturer / Brand
• Audio Research, Plymouth

• Year
• 1970

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 148512

• Number of Tubes
• 14

• Valves / Tubes
• 6550 6550 6550 6550 6CG7 6CG7 6CG7 6CG7 6CG7 6CG7 12AX7 12AX7 12AX7 12AX7

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Dual 100 - Audio Research, Plymouth

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 17 x 8 x 13 inch / 432 x 203 x 330 mm

• Notes
• Two chassis tube stereo power amplifier. 75 Watts RMS 30Hz to 15kHz.
  Output regulation: From 16 Ohm resistive load to open circuit less than 1dB change at 1 kHz.
  Tube complement: Power supply: (4) 6080, (1) OB2, (2) OA2, (1) 6AU6, (1) 6CA7/EL34.
  Amplifier: (4) 6550, (6) 6CG7, (4) 12AX7.
  Weight Power supply: 88 lbs. Dimension: 17" x 10,5" x 13".

• Price in first year of sale
• 1,500.00 $

• Source of data
• -- Original prospect or advert

• 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