Thus, following rule #9...All solid state amps do not sound the same to me. More specifically, three iterations of an amp designed by the same amp designer did not sound the same to me (Ncore-based DIY, NAD, Mola Mola).
Furthermore, the amp designer continues to refine his design. Why? Can there be no improvement? If there is room for improvement, is the improvement in the sound quality (among other things)?
The designer, Bruno Putzeys, recently co-founded Purifi Audio. Their purpose statement:
"Scientifically proven technology breakthroughs that enable unrivalled performance, quality and ease-of-use. R&D with the purpose of removing all technical limitations in the enjoyment of reproduced music..."