People wanting to know the sound quality of E6 should read this:
http://www.mobile-review.com/review/...hones-en.shtml
It compared E2 with the rest of the music phones. E2 and E6 run the same OS but E6 has better hardware. This means that sound quality will be equal or most probably better than E2. And as you can see from the link, E2 demolished its competitors when it came to sound quality, including the famous Walkman phones. So we can expect similar experience from E6.