I have been using the K3003 for the better part of a year now. Its treble is beautifully energetic and bright. Thus, on this front alone, I doubt if it can be strictly called neutral.The K3003's mids and vocals are natural sounding but a bit boring in comparison with the likes of the FitEar TG334 and Dita Answer Truth edition. Bass can be awesome and large. Again, I don't know if it qualifies as neutral.