Newer LS50W owner here with about 100 hours on them. So far some music is startlingly better (jazz, classical aka 'pretty' music) while stuff with an edge sounds worse (rock). I'm seeking general tips to bring out more warmth and mid range- they sound metallic and harsh at times. I have them on stands, wall distance is 25 cm, my room is 24 sq meters and "lively." Whenever I try to select for "extra bass extension" in the expert settings, the basic settings tab then decides my room is >40m square (large). Also, what are your favorite USB cables for this DAC? Thanks!