I did mention a caveat earlier but might be worth repeating.
The input impedance on the Focal studio monitors are very low. About 10kOhms or something.
http://www.focalprofessional.com/url...fication-sheet
On my Ayon CD5S which features no negative feedback, it does create weird distortions in balanced mode and less so in Single Ended.
Not an issue when I use a solid state Bel Canto Pre3 or DAC3.5VB II though.
In the past, there was also a flagship SM11 with its own DAC!! So you had to use something like a Weiss INT202 to supply dual mono SPDIFs to the speakers!!