Natural Sound Stereo Amplifier A 420

Yamaha Co.; Hamamatsu

  • Year
  • 1982
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 133477
    • alternative name: Nippon Gakki

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 220 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 50 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Natural Sound Stereo Amplifier A 420 - Yamaha Co.; Hamamatsu
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 110 x 300 mm / 16.9 x 4.3 x 11.8 inch
  • Notes
    • La prima versione del 1982 impiegava un trasformatore di alimentazione standard e non toroidale. 
  • Net weight (2.2 lb = 1 kg)
  • 6 kg / 13 lb 3.5 oz (13.216 lb)
  • Source of data
  • - - Data from my own collection
  • Author
  • Model page created by Karl Reiter. See "Data change" for further contributors.

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