Ghe main technical issue is that correctly use with a dCS system requires a CD transport with wordclock input in order to ensure correct synch between it and the dCS
DAC. Without this facility you risk glitches being created ( which may not always be heard as substantive events but affect the sound generally). Further lacking this facility questions using that very costly Vivaldi system in the first place.
You can save cost ( as I have) by using a Rossini Transport instead. It is broadly similar to Vivaldi Transport II though still expensive and you give up control via Mosaic, though it will be controlled though the IR " plank" which you should have received with Vivaldi DAC.
This really depends on how extensive and how important your CD collection is to you as there is now at least one Chinese unit with a wordclock input. This is pretty cost effective to put it mildly. Regular @Dunc has purchased one and seems to be very pleased.