Reverberation Amplifier RA-990

Sansui Electric Co., Ltd.; Tokyo

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  • Year
  • 1983 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 359933

 Technical Specifications

  • 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) / 50-60 Hz, 120; 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Reverberation Amplifier RA-990 - Sansui Electric Co., Ltd.;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 112 x 272 mm / 16.9 x 4.4 x 10.7 inch
  • Notes

  • The Sansui RA-990 is a reverberation amplifier designed to add depth and ambiance to audio signals. Unlike traditional spring reverb units, the RA-990 utilizes bucket brigade analog chips to create its reverb effect. This solid-state design allows for a more compact and reliable unit compared to mechanical spring systems.

    Technical Specifications

    • Frequency response: 20 Hz to 20,000 Hz
    • Input sensitivity: 1 mV (mic), 20 mV (line)

    Features

    • Multiple inputs and outputs via RCA connectors
    • Compatible with home audio systems and potentially usable for music production
    • Available in silver and black models

    Design and Construction

    The RA-990 shares technical similarities with its predecessor, the RA-900, but features an updated front panel design and green logo to match Sansui's newer product lines, such as the AU-D22 and AU-D33 series. This suggests that the RA-990 was part of a later generation of Sansui audio equipment, likely produced in the early to mid-1980s.

  • Net weight (2.2 lb = 1 kg)
  • 3.7 kg / 8 lb 2.4 oz (8.15 lb)
  • Mentioned in
  • - - Manufacturers Literature (1983-Sansui-Hi-Fi-Buch)
  • Author
  • Model page created by Peter Liska. See "Data change" for further contributors.

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