So, I did it, I bought the Sigma SSP and installed it last night, it took me a while to figure out why the main speakers weren't working and I couldn't hear anything in direct stereo mode… I hadn't plugged the XLR connections on the Emotiva XPA-5 amp. D'oh!
On a different note though, I hadn't noticed and had wrongly assumed this couldn't possibly be a problem but there SSP does not have a 12V trigger output, only the CAN BUS port which means that I am not able to remotely control the amplifier.
Any advice as to how to make that work (short of buying a Sigma AMP-5 that is

? I wonder if there are any solutions that implement the CAN BUS protocol to do a 12V trigger.
Thanks!
Alex.