just found this thread and it's interesting to read the listing impressions included excess treble. I felt the same way...out of the box there was a lot of treble coming from this device. Over say 5 hours this softened and now, about a three or four weeks in and around 30 hours I feel like it's much improved. I think it's still setting in but the sound is much more open and there is a bigger soundstage with the X vs. the N130.
