Hello again! Since we made it to control audio volume with 3 daisy chained PGA2311 there´s no need for my primary intention using VCA´s. Thank´s though for your replies, as it will probably help other arduino geeks solving their tasks! Yeah, we made it just a couple of days ago, and as soon as the machine is completely working, I will off course publish it in the playground. Just one thing, in case somebody works with PGA´s: THE MUTE PIN 8 MUST BE SET ON HIGH TO UNMUTE!!! - is not clearly mentioned in the Datasheet and took us a while... All the best & good luck, Marc