• Country
• Germany

• Manufacturer / Brand
• Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München

• Year
• 1925/1926

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 5622

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• Audio-Amplification

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: NF-Verstärker - Siemens & Halske, -Schuckert

• Notes
• NF-Verstärker

• Price in first year of sale
• 98.00 RM

• Source of data
• Katalog Radiohaus Grüner 1925 / Radiokatalog Band 1, Ernst Erb

• Other Models

• Here you find 2522 models, 2119 with images and 1334 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München