KT205I got the M100 too. They awful. Do yourself a favor and pitch them. I'm beyond disappointed in these, and I own many pairs of various IEMs. I've got $20 Sony earbuds that sound far better than these M100s. Also, these are not IEM worthy in quality or build. My $85 Shure 215s are my everyday IEMs that I gig with every weekend. Compared to them, I'm more inclined to use these M100s as weedeater string. Bleh.