High End System Building. How important is the matching, cabling and room? Thoughts ?

the room is paramount, as it couples with the chosen speakers

long story short, rooms matter alot, often at least as much as the cumulative effect of all the equipment

but if you have a bad room, a lot can be done to make the listening experience fairly good, most notably minimizing room effects by going nearfield or semi nearfield

room treatments can help in some difficult rooms, but often a very bad/weird room just cannot be handled just by treatments

@calvinj 

seems to me that even though you started this thread asking for others' input you are here to speak rather than listen...

i guess that's fine, to each their own as to why they come to this forum

@calvinj

no worries, and not at all offended, was just making an observation, not a criticism

hope you are getting information and interactions you seek

happy new year and happy listening