IT01s will be more colored vs the FDX1 for certain but it is done very tastefully has a great sense of immersion. Resolution of the earphones are undeniable. I still might go for it. Like I said I see that 400 pair sold and I suspect real soon. It might push me over the edge. The way the reviews read about the FDX1 I can insert my IT01S and it is like they are describing it. As of now I am 65% leaning toward getting one. Has been a while since I got a JVC phone.