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Class of operation for Tube Power Amps

My understanding is tube amplifiers can be ran in Class A or Class A/B operation just like Solid State amps. MANY tube amps do not say what class they are running. If they don't say this in the specifications do you just assume the are Class A/B. How can you tell?

willywonka

Showing 1 response by bigkidz

bigkidz
3,443 posts
 
  1. Look at the number of output tubes: If the amp has only one or two output tubes, it's more likely to be Class A. If it has four or more, it's likely Class AB. 

Interesting comment but we make tube mono block amps that have 4 output tubes and they are class A operation.

So the answer is to ask the manufacturer.

Happy Listening,

 

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