• Country
• United States of America (USA)

• Manufacturer / Brand
• Audio Research, Plymouth

• Year
• 1969

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 148515

• Number of Tubes
• 11

• Valves / Tubes
• 12AX7 12AX7 12AX7 6FQ7 6FQ7 6FQ7 6FQ7 6L6GB or KT66 or EL34 6L6GB or KT66 or EL34 6L6GB or KT66 or EL34 6L6GB or KT66 or EL34 0A2 0A2

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / 117; 220 Volt

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

• Power out
• 106 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: High Definition Amplifier Dual 50 - Audio Research, Plymouth

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 16 x 9.25 x 7.5 inch / 406 x 235 x 191 mm

• Notes

• Stereo power amplifier, 53 watts per channel into 8 ohms; designed for stable operation at complex loads.

• Net weight (2.2 lb = 1 kg)
• 19 kg / 41 lb 13.6 oz (41.85 lb)

• 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, 16 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Audio Research, Plymouth