I can't remember, it is a copy of a general one that I got off ebay. Will look it up tonight. Yes, they are isolated. I needed more power for the B3 and the VoiceLive, but also needed to isolate the B3 from everything and the smoothhound, if we are not going to take a trip to digital noise town.
The only downside, and the reason i am thinking of changing it is that to get the power for the voicelive and to keep the smoothhound and B3 away from each other, I need to run the voicelive from 9v, and it is a 12v unit. So it is right on the edge of what it takes. I have had a couple of times where I couldn't change patch (although none where it had failed, and you can always bypass).
The other downside is that it is fed from a 12v power plug, with a short lead, and I would prefer it to be connected with an ordinary mains socket - must put that in at some point.