Gold Lion GZ34 / 5AR4 / U77 Rectifier Vacuum Tube

Smooth, refined, and balanced sound reproduction for high-end audio applications

Robust construction for exceptional durability and longevity

Compatible with any circuit using a 5AR4 tube

Also known as U77 in European naming conventions

Delivers the very best high-end audio sound quality

Rigorously tested to meet Genalex Gold Lion standards

To be labeled Genalex Gold Lion, tubes must endure and pass the toughest testing the industry offers.