5687 Tung-Sol (Selected for Line-Level Use). Originally Developed & Patented by Tung-Sol in 1948


  • One of the tubes that built America and won WW2
  • Most favored 5687 in history by both engineers and music lovers.
  • 1950’s Big D-Getters help make this tube a real winner.
  • Great for power supplies and all kinds of amplifiers.
  • Big clean and clear bold sound. Both sweet and detailed at the same time!
  • Color code (Red = Line Level Suitable for Amplifier or Pre-Amplifier Out or Second Stage use)

If multiple tubes are ordered, micro matching is automatic.


103 in stock

SKU: Tung-Sol-5687-Line-level-1 Categories: ,


  • These tubes are selected for low microphonics. (Driver circuits or power amps.)
  • 1950’s Big D-Getters.
  • Big clean and clear bold sound. Sweet and creamy at the same time.