Pass XA 160 review:life span is 6 years?

"Gregm" is correct - the bus caps will have a finite life period
where leakage remains within their spec. All designers calculate the life
expectancy of the caps since these are virtually always the limiting
component in regards to life expectancy. Or, at least they should be doing
this and providing us with the info.

The Pass amp is no different than any other amp that uses electrolytic
capacitors, especially the bus rail caps. Be advised that the actual realized
life will be far greater than the calculated life since the calculations are
generally made using worse case parameters - such as the amp being run at
max watts, in the highest spec'd ambient temperature, etc.

Yep, change the caps and you're back in business - when you really need to
which could be a long time away. No reason at all to fret this as it is
generally a simple activity. If the designers of the other amps can't give you a
life expectancy then maybe you should shy away from their product since
they likely were not diligent in their design process. At this point I would
say the Pass is a very well designed amplifier.