RikudouGoku
Member of the Trade: RikuBuds
A cable wont fix the issues on the male vocals, its a tonality thing...If you feel male vocals are lacking then try them with the tanchjim upgrade cable. From a bright signature it becomes dark and adds more warmth. I personally find it on a similar level to the kanas pro. Better vocals and highs on the kpe whilst the oxygens have a slight edge in technicalities, better bass and a slightly more spacious stage. My o2 have been left faulty for a good time now but if I can't repair them then I'll just sell them (would be a shame).
I am using the Faaeal litz copper cable too.