• Country
• Czechoslovakia

• Manufacturer / Brand
• Tesla; Praha, Bratislava etc.

• Year
• 1955 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 317001

• • Brand: Supraphon

• Number of Tubes
• 4

• Valves / Tubes
• EF22 EF22 EBL21 AZ1

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 120 / 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Mikrofonní předzesilovač - Microphone Preamplifier 511671 - Tesla; Praha, Bratislava etc.

• Shape
• Rack

• Dimensions (WHD)
• 485 x 90 x 300 mm / 19.1 x 3.5 x 11.8 inch

• Mentioned in
• -- Original-techn. papers.

• Author
• Model page created by Gabriel Toth. See "Data change" for further contributors.

• Other Models

• Here you find 1832 models, 1138 with images and 643 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.