I have an ax2 and just recently noticed the sound quality was not the same. I did a hard reset, replaced the speaker cables, and still is not up to par. Basically from what I can tell the high end is not coming through. I am hearing the change when I boost the treble all the way up, but it still does not come through. Most of the sounds are quiet and have no real difference in them, because of this. It may be that my speakers are bad, but I feel like it could be a different more common issue that you guys might be able to assist me in. Any help would be greatly appreciated. Thanks guys!!!!