For more information on 300B tubes including pinout, ratings, application and possible substitutions visit 300B in Duncan Amps, and 300B in The Tube Directory. |
 Top of Page The easiest way to buy vacuum tubes. |
For more information on 300B tubes including pinout, ratings, application and possible substitutions visit 300B in Duncan Amps, and 300B in The Tube Directory. |
Top of Page The easiest way to buy vacuum tubes. |