Tung Sol | Flasher Exclusive

“It’s not just a tube – it’s a mood. The flasher makes practicing alone in a dark room feel like playing a stadium.”

In response to the demand for the Tung-Sol Flasher, several reissue and alternative tubes have been introduced: tung sol flasher

Note: Tung-Sol is best known for the 6550 and 12AX7, but the “Flasher” refers to a specific gimmick in their 6L6G/6L6GA tubes from the 1940s-50s, and modern reissues that mimic this effect. “It’s not just a tube – it’s a mood

The Tung-Sol Flasher is a highly sought-after vacuum tube that has been a staple of guitar amplification for decades. Known for its exceptional tone, reliability, and versatility, the Tung-Sol Flasher has become a legendary component in the world of guitar amplifiers. Hornfeck

For a technical deep dive, ignore general encyclopedia entries. Look for by Anthony J. Hornfeck. It is the definitive paper describing the physics of the Tung-Sol Thermal Flasher, detailing the mathematical relationship between the heater coil resistance and the deflection rate of the bi-metallic armature.

If you are writing a report or researching the technology, here is the technical synopsis of why this specific flasher is significant in engineering history:

Tested in a and a Marshall JTM45 .