I find it a risk, yes, as with any software controlled volume. I have seen one thread on the Wiim forum about it, although I've not had such experience with my Ultra. Unfortunately I also bought a very powerful power amp (2x NCx500 modules) so I have to set both my Ultra and my preamp to very low volume levels for normal listening.With the Wiim Ultra and its volume limit + output voltage setting. Do you still find It a risk to run it directly into a power amp?
On the other hand, blowing out the speakers would be a nice opportunity for upgrade.