Rectifier tubes I have seen old 50s Mullard 5ar4 rectifier still operating well
after 10 + years. The Type and quality of the rectifier has a lot to do with it ,as well as how hard they are run.if it a well thought out design it is around 35% of its potential . That is what my Lampizator dac
runs the rectifier at, which I had changed from a 6x5 to a 5u4Gwith a new 5 volt transformer. This 5v rectifier puts out 3 Amps vs 1.2, which gives a ton of control , and operates at under 40% potential .This 5u4G 1950coke bottle type which is excellent and much less $$ then the most popular 5ar4 rectifier tube.
after 10 + years. The Type and quality of the rectifier has a lot to do with it ,as well as how hard they are run.if it a well thought out design it is around 35% of its potential . That is what my Lampizator dac
runs the rectifier at, which I had changed from a 6x5 to a 5u4Gwith a new 5 volt transformer. This 5v rectifier puts out 3 Amps vs 1.2, which gives a ton of control , and operates at under 40% potential .This 5u4G 1950coke bottle type which is excellent and much less $$ then the most popular 5ar4 rectifier tube.