AZ4 = WE56. Tube Type: AZ4 – Full-Wave Vacuum Rectifier. About the AZ4. Original rectifiers like this are getting scarce. Both rectifier sections (D1 and D2) tested well above minimum. Similar, different base: AZ12.
AZ4 = WE56. Tube Type: AZ4 – Full-Wave Vacuum Rectifier. About the AZ4. Original rectifiers like this are getting scarce. Both rectifier sections (D1 and D2) tested well above minimum. Similar, different base: AZ12.