Some modification are made on my theremin :
1) Volume adjustment, for having more control with this antenna
2) Brightness enhancement with adding some component inside the instrument. Now I can play a much more "round" sound when I turn the Brightness button to the right.
This was all done by Thierry Frenkel the well known Theremingénieur ! Thanks A lot Man !
48° 4'40.37"N 7°21'25.77"E