Thank you for your quick comments, which I read with some relief as I was not really looking forward to buying a microscope + stand and spending a day or, as I am not really handy with computer programs and all this, several days learning to handle it. \
I think an underlying reason for my question may have been that I am not quite sure what to strive for in my system, i.e. what sound could be achieved in my room with my gear when everything is set up just right and thus form the reference. I get a lot of compliments for the music from friends and other visitors but am sure that considerable improvements could be achieved by someone more proficient than I am.