I find the opportunity to view the review on the Polish magazine on my desktop and translate the page to English using Google Translate. Here is their rating summary in case you haven't tried this already:
Execution
Work of art. In a class of its own. An uncompromising concept of the transducer system and housing, in a form of unusual and immortal aesthetic qualities.
Lab
Good balance with a slight boost to the treble and excellent linearity of the low-midrange. Very low lower limit frequency (-6dB 20Hz).
Sound
Phenomenal consistency, dynamics and detail.
In the form of the Signature 800, and even the cheaper Nautilus 800, a loudspeaker is delivered, both promising an even higher technical and sonic level, and presenting an extremely beautiful appearance.