Groove Tubes ST12AX7R Bright Russian Silver Series Preamp Tube

 

Groove Tube's Silver Series ST 12AX7R preamp vacuum tubes are an excellent for replacing weak or failing preamp 12AX7s in any guitar amplifier, and are an exceptional value. The GT Silver Series amplifier tubes are carefully tested for grid leakage, high gas content, hum and noise. All Silver Series tubes are guaranteed for three months to meet or exceed factory specifications. It's not recommended for critical high gain V1 amp stages, but it's fine for other less critical stages such as V2-V6.

 

We offer the ST 12AX7Rs as single tubes.