There is no "perfection" in sound... There is optimums levels for some specific acoustic factors in some specific physical and neurological conditions .... "Perfection of sound is a marketing myth sales pitch AT THE END ... Because each brain/ears is a specific "imperfect" toys/tools at the same time , the only one toy/tool we had and acoustics/psycho-acoustics do not distinguish between toys or tools...
Acoustic law apply for a toy room and for tool room the same with sometimes better result in the toy room than in some tool room or the reverse...
There are tools and they are toys. Toys are for consumers and tools are for professionals. That is the difference. Perfection in sound can be from both toys and tools.