| 1. | Armstrong later published a paper detailing how the Audion worked.
 
  | 
 | 2. | Further increase in tuning resulted in the Audion amplifier reaching self-oscillation.
 
  | 
 | 3. | De Forest made the " Audion tube " from a vacuum tube.
 
  | 
 | 4. | In February 1916 DeForest Company sued Audio Tron for infringement of the DeForest Audion patent.
 
  | 
 | 5. | SoundJam MP became a successful product in the Mac music player market, competing with Audion.
 
  | 
 | 6. | Lee De Forest had an interest in wireless telegraphy and he invented the Audion in 1906.
 
  | 
 | 7. | Audion became known for its MP3 decoder, which is reputed to produce sound with superior fidelity.
 
  | 
 | 8. | A significant invention, which later had a profound effect on electronic music, was the audion in 1906.
 
  | 
 | 9. | In 1906, Lee De Forest brought out a vacuum tube device which he called the " audion ".
 
  | 
 | 10. | The meeting never took place, and Apple instead acquired Audion rival SoundJam MP as the basis for iTunes.
 
  |