• Country
• Germany

• Manufacturer / Brand
• Dual, Gebr. Steidinger; St. Georgen/Schwarzwald

• Year
• 1973–1975

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 83787

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

• Number of Transistors
• 4

• Semiconductors
• BC253 or. BC309 BC253 or. BC309 BC173 BC173 1N4148

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Entzerr-Vorverstärker TVV47 - Dual, Gebr. Steidinger; St.

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 160 x 40 x 70 mm / 6.3 x 1.6 x 2.8 inch

• Notes
• HiFi-Entzerrer-Vorverstärker. Nachfolger des TVV 46 mit anderen Transistoren und geändertem Filter für besseren Frequenzgang.
  4 Dioden 1N4148 als Gleichrichter.

• Net weight (2.2 lb = 1 kg)
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Price in first year of sale
• 74.00 DM

• Source of data
• Handbuch VDRG 1973/1974 / Radiokatalog Band 2, Ernst Erb

• Author
• Model page created by Rudolf HEINZ. See "Data change" for further contributors.

• Other Models

• Here you find 885 models, 845 with images and 476 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Dual, Gebr. Steidinger; St. Georgen/Schwarzwald