12afael, I don't know if you're still looking at GroupDIY. I just finished building one of these that I started a few years back with your rev 3 pcb design.I know it took a lot of time but "so many projects, so little time".
I made mine with a 9v mains supply, but am thinking of making it more 9v to attempt to get a better SNR, since as otherpeoplehave commented it is a bit hissy.
It sounds very nice, thanks for making the pcb layout available.