12AT7 Select - Durable phase splitter or driver tube. Excellent in vibrato or reverb circuits where consistent, high output power is desired.

For over 30 years, Groove Tubes have been trusted and demanded by touring professionals and their techs around the world. Groove Tubes started in southern California, and through innovative design, rigorous selection and testing, GT-powered amps have rocked the world in some of the most famous rigs ever played from studio to stage. Combining our passion for music with the science of sound, the Groove Tubes team still employs the same testing, grading and matching disciplines that continue to deliver flawless performance every time.