My Ti's arrived and they sound very good. They have a nice warm and non-fatiguing sound. While there is just enough volume coming straight out of my Tera, I do find they improve with amping. They seem to match up well with the Tralucent T-1 amp. And this is straight out of the box. We will see how the sound matures.
I also enjoyed them hooked up to my iCAN amp, although the HD650s are still the best headphones I have tried with that amp. http://www.head-fi.org/t/654405/ican-amp-review-a-new-amp-that-gives-you-more-more-bass-more-soundstage-and-more-detail