No reviews yet, but expected to be formally launched next week at the CES 2011. A cut-paste of the Company's press release is here:
Westone 4: World's First Four-Driver Universal-Fit In-Ear Headphone | AVguide
And a bit cheaper than the 3-driver Shure SE 530 or 535.
Westone 4: World's First Four-Driver Universal-Fit In-Ear Headphone | AVguide
And a bit cheaper than the 3-driver Shure SE 530 or 535.