Hi I have updated my page dedicated to the VCA, in fact I changed some resistor values to have a wider dynamic range. http://www-timc.imag.fr/Yves.Usson/personnel/SDIY/Modular/index.html http://www-timc.imag.fr/Yves.Usson/personnel/SDIY/Modular/EN/VCA/index.html Cheers ------------------------------------------------- envoyé via Webmail/IMAG !