Amps & Effects Groove Tubes Amp Parts | Groove Tubes Gold Series Gt-12At7 Preamp Tube

The Groove Tubes Gt-12At7 Preamp Tube Is Manufactured To The Highest Quality Jan Spec. Nos, Made In Russia For Extremely Long Life. Used Widely In Most U.S.-Made Amps And, In Particular, Fender Amps. Fender Amps With Reverb Use 2 – 12At7S — One For The Reverb Drive Stage, And One As A Phase Inverter To Drive The Push/Pull Output Stage. The Makeup Of The 12At7 Is Very Similar To The 12Ax7 And It Can Be Substituted For A 12Ax7 In A Pinch. Some Players Prefer The 12At7 In The Driver Stage Of A Marshall For A Cleaner, Brighter Tone. (The Driver Or Phase Inverter Is The 12Ax7 Located Nearest The Power Tubes.) The 12At7 Is Rarely Used In A Tone-Generating Stage, But Rather In Function Stages, So The Groove Tubes Gt-12At7 Is Selected For Durability.

Country Of Origin: Russia