I got mine in my system yesterday evening, and had a chance to do a little listening. First impression right out of the box, the Transport has an analytical sound. I think it has tremendous potential, but right out of the box it was a bit uninvolving. Bass output was tremendous however, the best I have had in my system. A tad forward in the upper mid/lower treble, but that could be due to the fact it was brand new and also "cold". Not much soundstaging width or depth either. In comparing it to a fully modded SB2 or modded Atoll CD100, well, there is no comparison. The modded SB2 was warm, involving, with layer upon layer of detail presented in an organic manner. The Atoll is very similar sounding, probably due to the capacitors and other mods being very similar to the SB2. My best analogy would be likening the SB2 and Atoll to candle lighting, and the Transport to flourescent lighting. Both illuminated, but one was just more pleasant to experience than the other.
I have been letting the Transport run since last night, it will be interesting to see if its character changes with a few more hours on it.
System:
Slim Devices Transport with Cyberlight P2A cables running directly to Nuforce Ref 9SE amps, using the Transport's built in volume control.
Speakers are SP Technology Continuum 2.5, With Harmonic Tech Pro 9 Plus speaker cable.