DIAMOND DIFFERENTIAL INPUT POWER AMPLIFIER EBay kit

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This is very true, Forr,

This particular amp has two patents (self regulating VAS current and something else if I remember correctly) but the drawback was that this amp (and possibly other Sansui amps as well) operated on the verge of stability. I never had any Sansui equipment and I am not really familiar with their designs. Simply when I saw this kit on EBay I decided to check the net for similar designs before deciding whether to buy it or not and found this Sansui.

cheers,
 
At last.:)...the amp is finished....sounds great...had some problems with fake devices..sorry for the delay.
 

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Fakes were output devices (ON-Semi NJW3281...)...the emitter resistors bad quality too...once replaced the unit works fine..two buyers are available: Tubeshunter and Jimsaudio..Tubeshunter don´t send any information..and the boards are different too from different suppliers...Good luck.
 
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