The Groove Tubes GT-12AT7 is a premium-quality preamp tube that meets Groove Tubes’ strict certification standards for microphonics, hum, physical integrity, and performance. Designed and tested specifically for musical instrument amplification, this 9-pin triode tube is standard equipment in Fender® amplifiers and delivers consistent, reliable output. Its balanced performance makes it an excellent choice for reverb and vibrato circuits, as well as for use as a phase splitter or driver tube when dependable power and clarity are required.