Hi Gopher,
Ok, I get it - sounds like a lot of happy Lampizator customers out there. Lukasz is fortunate that sales of the Level 4 and positive reviews on these forums have helped folks become aware of his DACs. I have done about as much reading about Lampizator as I can, and now need to decide whether to give one a try, or not.
The HEX I am using is an excellent sounding and well reviewed DAC, and for many would be an end game piece. It is very neutral, sounding neither lean or fat, and still manages to accomplish excellent bass extension and drive, as well as an organic/realistic presentation. It does absolutely nothing wrong. It is just that my personal listening preferences lean toward a touch more midrange/midbass warmth. The only two DACs I have read about that may provide those characteristics, without significantly losing out in other areas, are the Lampizator and the CAD 1543, which is almost unknown over here in the USA. Because of availability issues and the relatively high pricing of the CAD, it is likely I will try a Lampizator first.