5AR4 / GZ34 tubes

This 1969 Amperex GZ34 / 5AR4 full-wave rectifier tube has gray plates and dual D getters (f33 series). The orange print on the brown base has the CBS logo and says "Made in Holland." The Brussels factory code is etched in the glass. Tube tests as new.

This rare 1959 "fat base" Mullard GZ34 / 5AR4 rectifier tube has gray plates and dual halo getters (f31 series). The partial white print on the glass is labeled "The Fisher" The Blackburn, UK factory code is etched in the glass. Tube tests as new.

This 1966 Mullard GZ34 / 5AR4 rectifier tube has plates with 4 notches and a hole in the centering pin (f32 series). It was made in Great Britain and labeled for other companies. The Blackburn, UK factory code is etched in the glass. Tube tests as new.

The Sovtek 5AR4 / GZ34 rectifier tubes in this precisely matched pair have one of the best reputations for new production rectifier tubes at a very affordable price. They are tested and matched according to their voltage drop across each section.