Best 40 to 50k used speakers

Since you are in Germany then you have to go listen to DynamiKKts speakers.    Ascendo recommended them to me!  Go Figure.  The are easy to drive and I think the starting price for floor standers is $20K and they go up from there.  They are so much fun to listen to.  Extremely dynamics, open deep bass, etc.  Just a joy.  Lamm family bought them also.

Happy Listening.

May want to check these guys out - best value if you can get on used market 

Lansche Audio

https://www.lansche-audio.com/products/no-5-2/

A lot. Have in mind Kharma Exquisite, Avalon Eidolon or Gryphon Pantheon. Unbeatables.

Alsyvox at drvinyl.net
you won’t be dissapointed
the best music I have ever heard

Wilson Benesch Cardinals

http://www.theaudiobeat.com/equipment/wilson_benesch_cardinal.htm