I'm happy to tell that my two A-141-1 modules have got very similar curves now.

Moving the trimming potentiometer seems to change  the overall envelope time. It  is very touchy, but with a little patience I've been able to make the curves of the two modules very close to each other.

Thanks to Dieter and Florian for their help, that's great customer support !

By the way, I wondered if my second A-141-1 module is a revised version, since it has another IC and two added resistors.  I'd be glad to know a little more about it !

Anyway have a nice day, and thanks again.

Thomas

(komyta)