Tube preamplifier lifespan

it's not the tube life that i'm worried about, the 12au7 tubes are relatively cheap , and there are only 2 of them. it's the comment that the design of a tube preamp won't last nearly as long as a solid state preamp

Onehoursepony,

Utter nonsense.  The only thing that does not last as long is the tubes.   There are Mcintosh, ARC etc... tube preamps still in the field.   

exactly , Mcintosh amps last for a very long time, why would PSaudo preamps and amps not last for as long?

It looks like you are looking for a particular answer or opinion that matches your already made- conclusion 

@tablejockey, Paul McGowan told you that a tubed component only lasts 20 years?