• Country
• United States of America (USA)

• Manufacturer / Brand
• Audio Research, Plymouth

• Year
• 1975 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 281763

• Number of Tubes
• 8

• Valves / Tubes
• 12AX7A 12AX7A 12AX7A 12AX7A 12AX7A 12AX7A 12AX7A 12AX7A

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hi-Fi equipment

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

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: High Definition Stereo Control SP-3A1 - Audio Research, Plymouth

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 15.5 x 5.5 x 14 inch / 394 x 140 x 356 mm

• Author
• Model page created by Gottfried Silberhorn. 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