may be I was wrong on that point;[and maybe] because I expected more detail from what I waiting for it about 10 months
anyway ; I'm sorry
treble switch works great, and my preference treble is I (some times II )
I want to upgrade my IEM, already I'm waiting to hear news about vsonic gr08 and UE900 to compare them with westone 4R (I think that grado gr10 will be too bright for me )
do you have any suggestion?
Bro the UE900 was an April Fool's joke...