The HE-400i has a lot in common with the HE-500. It's a little more aggressive/energetic, though, especially with vocals which are pushed a bit too forward for my tastes. I found the 500 to be a little more natural sounding. The 400i does have slightly more focused bass, whereas the 500 bass is a little more bloated. I chose the 500, but it comes down to personal taste on this one, I think.
11/19/16 at 6:35am