Single most destructive thing to good sound? An untreated room.

You can have the world's most amazing speakers, amplifiers, source material, etc, and in an average room (which is actually pretty acoustically poor) it will not sound nearly as good as in a room that doesn't color/distort the sound.

Another way to look at it... All professionally designed rooms have acoustical treatments, and usually a LOT of them, for a reason.

Farewell - June 4, 2020