Sorry, dude, it seems like you've been left hanging here. I don't have the ELE yet, but most opinions have been that it's a great little DAC for the money. I personally bought it because my computer's built-in sound is horrible and it sounds lie it makes a drastic improvement. On the other hand, if you have come from higher-end gear, then it might not be your cup of tea? Or just might not be your cup of tea anyway?
Have you tried it with other 'phones? Maybe the synergy with the S500 doesn't suit, but it'll work with other cans. What music have you been trying to listen to?
I don't have any other high end DAC or anything similar, this is my first DAC since I didn't want to spend more. I was thinking to go for a USB Creative/Asus DAC that have a double price so I preferred the ELE since it could be even better than these.
I usually listen through my Vaio Laptop which has a built in Realtek HD, pretty standard I think chipset.
The strange thing is than when I watch for example films the synergy is just great especially the 3D depth of sound. Also the soundstage is fuller and better in all cases. I've tried some trance DJ sets that I downloaded only for burning process and there it seems better than my built in source.
Unfortunately when I go to more "hard" sounds I loose clarity and bass. For example Kyuss - Demon Cleaner sounds even a bit muddy at some points
I also feel that I'm loosing the more detailed bass of some hip-hop songs, like Nas.
Could it be the fact that I haven't yet reached the required hours burning the s500?
Now I only have Radiopaq Jazz IEM to test with the DAC and they are not a great source of reference.