• Country
• Spain

• Manufacturer / Brand
• Bettor, Industrias; Barcelona

• Year
• 1976

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 246062

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

• Number of Transistors
• 12

• Semiconductors
• SC109 SC109 SC107 MC150 BD175 or. BD131 BD176 or. BD132

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Changer (Record changer); Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / 125; 220 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 24 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 4 Channel Stereophonic Music System EF-275 Quadroeffect - Bettor, Industrias; Barcelona

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 402 x 100 x 307 mm / 15.8 x 3.9 x 12.1 inch

• Notes

• Industrias Bettor, S.A., 4 Channel Stereophonic Music System EF-275

  Hifi Solid State Unit Amplifier - Quadroeffect

  Outputs: 2+2 Loudspeakers, Phones
  Ext. Input: Tuner
  Controls: Volume, Treble and Bass
  Record changer:  Dual 1225

  Listados los transistores de un canal.

• Net weight (2.2 lb = 1 kg)
• 11 kg / 24 lb 3.7 oz (24.229 lb)

• Author
• Model page created by Julián Muñoz Lorenzo. See "Data change" for further contributors.

• Other Models

• Here you find 135 models, 135 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Bettor, Industrias; Barcelona