Tube Amp Doctor GZ34-STR / 5AR4 REDBASE

The Pure and Typical Sag!

A faithful reproduction of the Mullard/VALVO GZ34 (aka 5AR4) combined with the perfection known to our REDBASE™ series.

Pure power and the typical sag have been the distinguishing characteristics of the most popular guitar amp tones since the 1960s.

The TAD GZ34-STR is designed to stay quiet even in combo amplifiers and selected to ensure balanced diodes protecting the power supply unit from overheating.

Equivalent to 5AR4, can replace 5U4GB and 5U4G.