Dear headfellows,
" It appears to be balanced out only? "
Yes, and the reason is very simple. Any high-end DAC-chip has balanced outputs and to produce a single ended output would require an extra amplification stage for de-symmetrisation. Thus balanced by nature is superior (one amplification stage only). Moreover, the extra costs and space required for a single ended output would be quite high as it would require it's own series of relais for control volume.
" Looks like there's no analogue input "
Although the prototypes do have analog inputs, these will be missing on the final product. The reason is simple. Crossfeed, tone-controls, notch-filter, de-emphasis, .... are all done in the digital domain and this functionality goes lost with an analog input, unless the analog signals are digitalized internally. The implementation of high-end AD-conversion is beyond the scope of this product though.
Cheers
Jan