Build a really good 3A current source in the speaker stage?

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If you would build a really good current source that have a high current, 3A in the speaker drive stage. See the picture; how could it look like.
 

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AX tech editor
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A current source is not that complex, many discussions here on this are in the Pass Labs area. But I guess you REALLY want an amplifier with the current source as the last stage, no? That would be a single ended amp, again the Pass labs area abounds with such designs. And other threads also. Spend half an hour on searches, and you should get an idea how to do it. Then if neceesary ask pointed questions.

Jan Didden
 
I’m looking for a single end amp.
Thanks for the tip to look in the pass section but I have never been impressed about it after listen to a pass amp I Oslo. I had a old Nelson pass pre amp who I liked for a long time ago.

Can you give me a hint for my search ?
 
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