I need to disagree with you Meiwan. In my opinion, the Osiris can be considered even " cheaper" compared to the top integrated amplifiers in the market ( I mean Dartzeel, Gryphon, ASR, Vitus, Boulder - the ones I have listened ) . In my opinion, it is in a different league compared to Sim Audio.
My last integrated amplifier was a Gryphon Callisto, 2200, with An. Upgraded pre amplifier circuit similar to Gryphon Diablo and I think the Osiris even better.
Each of the mentioned top integrated amplifier has its own qualities and can even better match your taste than Osiris....but without doubt the Osiris has the same overall refined sound.