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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