Paulus XII
Formerly known as FW214b
... i guess that we do not listen to the same bands, or do not use the same headphones,..
For me, all generas sound better, including extremely dynamically compressed metal, like metallica, or such. I consider that e12a improoves all, even bad recorded music, like... painted in exile.
Probably because Westone W40 has such a separation and detail that you don't notice any difference in genres like Metal, etc. Just on jazz I can hear certain instruments better and it's very ocasionally. But for me this is sufficient to make all the difference (when I listen to jazz, otherwise I don't use it).