Show my classical DAC1541A

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It use the 4 Times classical SAA7220B/P+TDA1541AS1,But the output amp is stress design.
 

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My English is poor as well,but I know what he means😉 :The focus of his design is on the I/V circuit.

I knowed his I/V circuit has a diamond diff VAS stage,which like the the second stage of Yamaha B-6 power amp,sansui AX-1 ...and sansui other types amp.😎
 
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