For anyone looking for a very dark and smooth sound signature that's just a lot of fun to listen to, this is a good candidate to keep on your list!   Full review here: http://www.head-fi.org/t/622161/heir-audio-3-ai-impressions-comparisons-review-thread#post_8602024   Would give them more stars for design if i could...

For the price somewhere between $150.00 and $180.00 USD, there really isn't many other competition for the price. They really get the job done well. Can get a little stale in sound sometimes but that's really a rare case. These really are great!   Great sense if air in the treble (one of the best I've heard) with great detail and extension (sibilance was not a problem for me personally).   Fairly flat mid range that is true to the recording.   Very quick impact bass (especially for a dynamic driver) that's slightly north of neutral with great...