Power Supply Board 300VDC 0.15A Vintage type tube rectifier 6Z4 | eBay
6Z4 Rectifier Tube – American Guitar Shop - Gitarren in Berlin
Voltage out of tube rectifier? | diyAudio
6Z4/84 Full Wave Rectifier Tube. Designed to function as a power rectifier in AC or DC powered circuits. MFR: Sylvania SKU: 6Z4. New old stock. No longer available for export.
Ghxamp 6z4 Rectifier Dual Tube Preamplifier Bile Rectifier Filter Board Experimental Power Supply Single Dual Power Winding | Fruugo IL