I picked up the Helix DSP Ultra yesterday and installed it. Mobile Solutions Canada just took delivery of the first units into North America and I was able to pick it up right away. Larry and Chris have been fantastic and I give MSC my highest recommendation.I am running two C-Fours and One C-One into a Brax front stage with JL subs for now. Below are PIc's of my first real install. Each C-Four is set up as a mono block pair with one running the right channels and one running the left channels. The Midbass channel is bridged to get the best dynamics. No rear fill at this point. Son far the system is working great and I am pretty happy!!