After assembling a modest system - room acoustics probably has the biggest impact on sound quality.
I agree with those that say careful selection of furnishings can really help.
I drew the line at a custom designed soffit mounted main speaker and equipment cabinetry with 2 1/2" thick mdf and 3" acoustic fibreglass around mains, four corner bass traps, a custom massive log pile fire place (esthetic rear wall bass trap) a sub (even though main speakers have 12" woofers) and a PEQ to control extreme LF. I count myself fortunate not to be obsessive!
I agree with those that say careful selection of furnishings can really help.
I drew the line at a custom designed soffit mounted main speaker and equipment cabinetry with 2 1/2" thick mdf and 3" acoustic fibreglass around mains, four corner bass traps, a custom massive log pile fire place (esthetic rear wall bass trap) a sub (even though main speakers have 12" woofers) and a PEQ to control extreme LF. I count myself fortunate not to be obsessive!