Wow! These are simply amazing. After years of listening to hybrids and balanced armatures I always felt something was either missing or too artificial in the sound those produced. twister6's review pretty much is spot on...full sounding, warm, airy and spacious with just the right amount of bass for my taste. I just wished these had interchangeable cables so that I could listen to these through balanced output.
Prior to acquiring these, my daily iem of choice was the Sony xba-n3 which I also got earlier in January of this year during my Japan trip. BTW, I'm a huge Sony iem fan. I just like the "sony-house" sound. My collection also includes the Sony xba1, h2, a2 and 7550, Hifiman re-00 and re-400, LZ-A4, carbo tenore and mezzo, JH Audio Roxanne sirens.