• Country
• United States of America (USA)

• Manufacturer / Brand
• Audio Research, Plymouth

• Year
• 1972

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 148513

• Number of Tubes
• 17

• Valves / Tubes
• 12AX7 12AX7 12AX7 12AX7 6FQ7 6FQ7 6FQ7 6FQ7 6FQ7 6FQ7 6FQ7 6FQ7 6550 6550 6550 6550 6L6GC

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / 100; 120; 200; 240 Volt

• Power out
• 150 W (undistorted)

• Material
• Metal case

• from Radiomuseum.org
• Model: High Definition Audio Amplifier Dual 75 - Audio Research, Plymouth

• Shape
• Rack

• Dimensions (WHD)
• 19 x 7 x 12.25 inch / 483 x 178 x 311 mm

• Notes
• Tube stereo power amplifier.
  75 Watts RMS per channel minimum into 4, 8, or 16 ohm load from 20 Hz to 15 KHz with less than 1% total harmonic distortion.
  Tube complement: (4)12AX7, (8) 6FQ7, (2 matched pairs) 6550, (1) 5881.
  Options: Gold faceplate.

• Net weight (2.2 lb = 1 kg)
• 26 kg / 57 lb 4.3 oz (57.269 lb)

• Price in first year of sale
• 995.00 $

• Source of data
• -- Original prospect or advert

• Mentioned in
• -- Schematic

• 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