• Year
  • 1948 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 232026
    • alternative name: Operadio Mfg,

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

 Technical Specifications

  • Number of Tubes
  • 8
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 110-120 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 1A70-A - Operadio Corp.; St. Charles IL
  • Shape
  • Tablemodel, low profile (big size).
  • Notes
  • AC Operated Audio Booster Amplifier with Power Supply

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