• Country
• Germany

• Manufacturer / Brand
• Lindström, Carl; Berlin, Köln

• Year
• 1930/1931

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 15834

• Number of Tubes
• 2

• Valves / Tubes
• 2NF RGN1503

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: NF-Verstärker 556 - Lindström, Carl; Berlin, Köln

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 80 models, 67 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Lindström, Carl; Berlin, Köln