Class A amplifiers


I was watching YouTube reviews on Hifi and one guy said if you like Class A amps you have to accept that every 3 or 4 years you have to send them in to get serviced Becasue the heat inevitably causes issues? Is this true? I have a friend with an older Maek Levinson Class A amp and he was looking to sell,it to me, and am just wondering if Class A amps are like a boat, always costing you more . Anyone?
bear1971

Showing 1 response by roxy54

I haven't had the personal experience, but when you see old class A Krells for sale, (as one example) the seller will frequently mention that all of the power supply caps have been replaced at factory; and I have read that it's because of the high heat generated over years of constant use. For that reason, I have always avoided buying a used one even though I was tempted when I saw one that hadn't been refurbed. 
Is there no truth to this?