Brand

•  CETRON
•  CIFTE
•  EDISWAN
•  EIMAC
•  ELECTRO HARMONIX
•  GENERAL ELECTRIC
•  MARQUES DIVERSES / VARIOUS BRANDS
•  MAZDA
•  MULLARD
•  PHILIPS
•  RCA
•  RSD
•  RTC
•  SIEMENS
•  SYLVANIA
•  THOMSON
•  THOMSON CSF
•  USA
•  ZAERIX

Interests

•  Audiophiles
•  Collectors
•  Guitarists
•  Radio hams

Socket

•  B5F - GIANT 5 PIN
•  B7G - Miniatur (7 pins)
•  B8G - Loctal 8 pins
•  B9A - Noval (9 pins)
•  B9D - Magnoval / Novar (9 pins)
•  B9G - Loctal 9 pins
•  B12C - Duodecar 12 pins
•  Jumbo (845 type, 4 pins)
•  K8A - Octal (8 pins)
•  M7A - British 7 pins
•  S5G (Geant Special Support 5 Stifte - for 3-500Z)
•  SEPTAR
•  U7A (7 Pins)
•  UY-Base (807 type, 5 pins)

Heating parameters

•  4V
•  5V
•  6.3V
•  6V
•  10V
•  12,6V
•  25V
•  35V - 150mA
•  50V

Décennie

•  1930
•  1940
•  1950
•  1960
•  1970
•  1980

Connection on the top

•  With
•  Without