• Year
  • 1958 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 323192

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 60 Hz, 117V = 110 -120 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 21 - Tech-Master Products Co.;
  • Shape
  • Book-shelf unit.
  • Notes
  • Tech-Master model 21 is an AC operated audio amplifier.

  • Author
  • Model page created by Dirk Taekels. See "Data change" for further contributors.

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