Any users out there?
Has anyone compared it to other boxes?
This box seems like a better alternative to many of the other summing boxes that cost twice as much.
Separate stereo level and pan/balance controls make it much more flexible.
First I'd like to say: I have not tried it! With that out of the way I'd like to tell you my vision of "summing boxes".
I think the reason for a summing box is to give you the advantage of analogue summing while still having the luxury of automatation ITB. You can also do the summing with a mixer. Then you have the advantage of analog EQ, sends & busses to route outboards and effects through. The x.sum is something in between, not really a pure passive summing box or a full mixer. I doesn't say it sounds bad but it seems (for me anyway) pointless of having pans and levels on a summing box. But it's just me!