I'm done-HOOOORRRRAAY!
Audio passing,all functions working (Difference mode plus Mono is really powerful),and the phonesamp is absolutely great!I wouldn't have expected being it that good,seriously!
I even was able to zero the amps,I simply forgot that my lab DMM is capable of reading at least the 10th of a mV,great.Have the trimmers sealed now.
Jean-Pierre,this is an excellent kit,and I really appreciated your help and being here for us,thank you so much.
Finishing this build made my day:Good-Bye "Central Station",welcome you serious controler
If you guys are looking for an affordable and professional "non-sounding" monitor controler....here it is!
Time to sleep now,
best regards,
Udo.
P.S.:Will get an ir remote now to see how it behaves,but still have a small (wired) remote with a dial knob for volume in mind.Would also be very happy if the mentioned multiple phones amp will come to happen!