Tung-Sol has been producing pilot lights, headlamps, and flashlight bulbs since 1907. But since then, the vacuum tubes created by Tung-Sol have become fundamental to the sounds of tube amps throughout the decades. Like the 6550 vacuum tubes, developed in 1955 to mimic the famous 6L6 tubes, Tung-Sol has been creating tubes for amplifiers up to this day. Now a sister company to Sovtek and Electro-Harmonix, Tung-Sol has maintained its reputation for quality for years. Browse hundreds of listings for Tung-Sol tubes on Reverb.