Originally Posted by
Boyse6748
Well, phono stage valves usually have a longer life span than amplifier valves.... probably in the order if 10's of thousand hours.
Usually, valves will become noisy and fail sometime later (never happened to me) but if you are into tube rolling there are many valves that you may wish to try, instead of the stock valves.
Psvane are incredible but quite expensive as are other NOS stock (Mullard s etc).
For now, if it's working ok and sounds ok, leave well alone.
Peter
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Phono stages are amplifiers and there would be no particular difference between life of valves in either. Output valves in power amps will usually be the quickest to wear out. Sometimes valves will wear out quicker due to the way they are used (how hard they are being run) and some valves have reputations for wearing out/failing quicker than others... 10,000 hours would be good going and is often the spec given to long life special quality valves... which is not to say a standard quality valve cannot last this long, just that it is not specified to last this long by the manufacturer.
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