China preamp Xiang Sheng 768A

[piero7]

I'm looking for schematic diagram of Xiang Sheng 768A china preamp

This one

Xiang Sheng "768A" Headphone + Pre Amplifier - 12AX7 + 6N3 + 6N11 + 6Z4 Tube Amp @ on9mart.com

thanks!

 

[DF96]

Some Chinese audio companies don't publish circuit diagrams. The good ones don't want their competitors to see them. The bad ones don't want their customers to see them.

There is a suggestion here that for another one of their products one of the valves is not actually in the circuit!

 

[piero7]

thanks anyway