Ok, after a few days here are my impressions, tried at home for the moment in a 40 square meters room.
Let's start with what it's been designed for in first place, double bass :
With my short scale (34" or 1/8) Berne Harpobasse (Savarez Corelli 350 C Medium 1/8 Tungsten) and a Schertler Basik Reso (harp table on this strange instrument) coupled to a Schertler Stat Pre, the sound is powerful (mid volume and flat EQ), very respectful of the way you play and the Schertler system which