JJ GZ34 / 5AR4 Vacuum Tube Go to amazon.com Related posts Top 8 best rectifier tube: Which is the best one in 2022? FeatureJJ Electronics 5AR4Also known as an GZ34Octal rectifier tube(Max DC output current = 250 mA) DescriptionJJ Electronics 5AR4Also known as an GZ34Octal rectifier tube (Max DC output current = 250 mA)