The RFRFT ECC83 / 12AX7 is a durable tube with very low microphonics and that OSTtalgisch aka <Anna Seghers> sound !

Fender® / Groove® Tubes



All Fender® Tube Amps come Factory Equipped with Groove Tubes. They are much easier to replace (no re-biasing needed when replaced with color coded sets). They have improved harmonic balance, longer lifespan, matched gain to distortion ratio, plus a wider frequency response.

Fender® / Groove® Tubes



All Fender® Tube Amps come Factory Equipped with Groove Tubes. They are much easier to replace (no re-biasing needed when replaced with color coded sets). They have improved harmonic balance, longer lifespan, matched gain to distortion ratio, plus a wider frequency response.