Well it's been a day with it and I have some impressions to share .
Opened the box, hooked it up to my Win7 machine with no problems and loaded up my collection of FLAC and 320kbps MP3's of Alternative Rock and Korean Pop, (oh yes, Korean Pop and I'm Mexican).
First I hooked the s:flo2 to my RX700's.
What can I say ? It was GREAT . I've been using the HO on my laptop for the longest time and this was over nine thousand times better . The detail, seperation, clarity, bass, treble, EVERYTHING sounded way better. Then I hooked it up to my ES7's. Oh man, I didn't know it could get better ! The ES7's are definitely a good match with this player, it sounds amazing. This was definitely worth the wait.
Now onto the bad, the worst thing that I could find about this player is it's scrolling on menus, especially when selecting music. It's SO annoying when you try to scroll down (pretty damn slow may I add), and then you end up selecting a song by accident. Also what's annoying is that when you press say, "Albums" sometimes you get sent to the middle of the list right away, instead of starting at the top. Other than these nuisances, I have nothing else negative to report.
Can't wait to get an amp !
I've looked around and apparently the Headstage Arrow 12HE is a good combination with it, I may get it in the near future.