I run my studio closet that contains the Kyma, Mac Mini, external pci controller and a storage on a Tripp Lite SMART1500 series device. We have somewhat uneven power out here so we have small outages or blips happen once a week or so. It has worked fine for the past 6 months, but it is one of those things that is hard to judge until it fails. At 900w, it provides plenty of time to let things complete and then cycle down even at full load (which I am not even remotely at). It also has line conditioning for over and under voltages which was something I was looking for given my area.
Semi-related, I also highly recommend getting a USB silent fan to plop onto the top of the case. I have the AC Infinity S7 (dual version) and it turns out automatically upon powering up the Kyma and I've noticed that the Pacarans stay much cooler and never have the internal fans run at anything other than minimal levels so the whole setup is quiter now as well.