Complementary-differential input stage

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Wandering around the Internet I came across this, to me unusual solution amps, so I asked anyone who knows a little more to say about this concept. I made it, a little test, I listened and I can say that sounds very encouraging. So far I have not encountered this kind of input stage. Only thing I know about is to be called complementary-differential input stage.Eny useful information is appreciated. Thanks.


:::Borina Amaterska Svastara:::
 

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