Wow.. just got these from DAHMART off of Amazon for $205 (refurbished but look brand new) and they sound amazingly well without an amp. I've been using the HD25-1 ii for about a year and a half and my initial impressions of the Amperiors so far is that the sound is much more refined and cleaner resulting in better separation and detail, and the bass is a lot tighter and impactful. Definitely worth the upgrade over hd25-1 ii imo!!
12/10/12 at 1:57pm