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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
clearthinker's avatar
clearthinker
1,582 posts
 
And I have had a KSA50 (Krell's first product) since the early 80s.
It is very musical and never serviced, although I haven't used it much these last 25 years.  It doesn't run that hot.
georgehifi's avatar
georgehifi
10,312 posts
 



Give it a lift up to be even better than your hearing now, replace all the power supply caps and any other electrolytics on the boards they will all defiantly without a doubt need doing by now.

Cheers George
bt70
3 posts
 
I have Salk Sound speakers

im thinking of buying a mark levinson 50 watt class a amp except I’ve never bought used gear and am a little gun shy . Lol
wspohn's avatar
wspohn
579 posts
 
A well built Class A amp might need servicing every 30 years or so...but so will all the non Class A amps - they need the electrolytic capacitors renewed.
layton64
19 posts
 
Last week, I shipped my Krell Evo 402e for a factory refurbishment. It is played six to eight hours daily for 10 years and well ventilated. I plan to keep it forever and feel it a good investment to refresh the unit. 
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