I really like this vario, built in the 80's yet only draws 20 ma. I
don't have the right audio for it and the one I have is quite
annoying. I'll pay more than it's worth for the whole set up, Pehaps
someone has a box full of Ball parts they could check. I am not
interested in ANY Ball 100 series, but might consider Ball 400 if it
has a working audio...