I've been listening to these for the last few days. My first impressions are that these are some really nice iem's. The only issue I have with these are they are not forgiving to tracks that accentuate base or treble. Boomy tracks can sound overwhelmingly boomy and same goes with highs. Sub Bass seems a tad muddy at times but only a tad. Mids seem a tad recessed. I'm not experiencing the screeching treble that others are hearing but that may be a result of my older ears. I definitely would not say these are neutral by any stretch, nor are they monitor quality. They are a very very good fun iem's with a shallow "U" shaped signature. Crystal clear, great separation, good sound stage. For the money an awesome buy. If you are looking for a neutral sound exclusively, pass on these. But if you can enjoy a shallow U shaped sound signature you will enjoy these. Not great for every track you throw at them. But for balanced recordings these iem's shine.