EQ-7545R Preamp

[Saynom]

Hi everyone,

I would need to do a replica (and with better components / power supply instead of battery) of the EQ-7545R preamp.

I found this page: https://www.mikrocontroller.net/topic/421698 but I can't find its diagram.

Is there anyone here who happen to have it or have an idea to make a DIY version of this preamp/eq?

I have several ones which are dead, I also can open them and take some photos if it's of any help.

Thanks a lot in advance! :)