New guy here, but have been an avid reader.
I currently have the Totaldac D1 Twelve in for eval, and I find this DAC to be quite extraordinary. I own the Totaldac Monobloc's, and before the Twelve, I have never heard a better DAC. System and taste dependent, one could go either way with these fine products though.
Both these DAC's are pretty special with regard to stage depth, width, tone density, transparency, and image focus. They do this very easily. What sets them apart from other DAC's I have tried is stage height, dynamics, delineation, and speed. Play a well recorded populated classic ensemble, and all the instruments are there for you to enjoy, as a group of individuals. Never smeared. The magic is that they do this and remain natural with no artifacts. If all in the system is correct, you cannot tell where the speakers are.
The Twelve is really made to use with a very high quality preamp, or amplifier direct with plenty of gain. It does not have the drive the Monobloc's have, but with the right preamp, or higher gain amplifier, it is spooky good and just so natural sounding. It captures better the sound of the instruments vs it's close brother, the Monobloc.
The Monobloc has better bass control and is the more lively performer. To put simply, the Monobloc's are "plugged in" and the Twelve's are "un-plugged" and more intimate. In a big high powered system, the Monobloc may be the better match, giving the grander illusion of the live performance. In an ultra transparent system, with the finest speakers, and tube gear, the Twelve must be heard to be believed.
I should also plug the Totaldac Server here as well. Vincent really has the software down now, and it is quite a remarkable source. I come from custom built linear powered PC's and MAC's, very well tuned and optimized, with any of the playback software you can imagine. The Totaldac Server is better than all of the other digital sources I have tried.
I have tried MANY digital products, and none really have touched the Totaldac. Don't want to bash brands, but I will say that none of the products I have tried are cheap, and all are very well regarded. The Totaldac's sound closer to real than any of them I have tried. Just trying to give perspective, so I hope I am not rambling too much.
Regards
Paul