• Year
  • 1921 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 103636
    • alternative name: Lee De Forest Mfg.

 Technical Specifications

  • Number of Tubes
  • 2
  • Valves / Tubes
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Interpanel amplifier MP400 - DeForest Radio Telephone &
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 5 x 4.5 x 0 inch / 127 x 114 x 0 mm
  • Notes
  • Two tube amplifier. The one tube version is the MP200.
  • Source of data
  • -- Collector info (Sammler)
  • Author
  • Model page created by John Koster. See "Data change" for further contributors.

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