I have received my asg2.5s. I had a pair of asg2 with a crack in the shell. They wete bought used, but Andy from Aurisonics worked with me and made repairs for $150. Not only repaired, but upgraded to the 2 5's. I cant comment in depth on sound yet as I have not listened much yet, but brief impressions are vastly improvement to the sub bass. Same great quality too. Sounds as if mid bass has great impact, but not as much in quanity. To put #s to it if asg2 had sub bass of 2 and mid bass of 8, the new ones are close to 5+5, or a 50/50% split of sub to mid bass. And something else I cant finger yet, but it just sounds more refined. The clarity as improved, most likely due to reduction of mid bass. Other improvements are the cable, not that I had issue with the other cable. Also the tips included seem almost gel like. Now if owning asg2 im not sure the changes warrent buying asg2.5, but if they do offer upgrade program id jump all over it. Pics and more to come later