I'm running the two Friedmans in stereo and the celestions in stereo on channel two. The celestion cabs use the Neutrik connectors from a Matrix GT1000FX. As I can play really loud in my house and you can't hear it from the nearest neighbor, I've noticed as the celestion cabs kind of got broken in it's a good mix to use them together. I keep messing with the EQ on both channels, but they are sounding better to me. The Friedman and the celestion cabs have different harmonic qualities, and the sound is just huge and beautiful, from clean to dirty sounds. I've never had a tube amp and pedal board rig that sounded even close to this as far as the range of sounds I can get. Beautiful sparkling chiming cleans to beuatiful breakup using the volume on the guitar, to down right nasty like through Boogies and Friedman amp models on the Fractal. I am also playing with all kinds of IRs, and thinking of purchasing the newer York's that have come out. I have some older ones on here, and picked up some from Dweezil Zappa's site that are awesome. EVs and Marshall cabs that definitely sound incredible and in your face. Overall they are similar in sound so it just gets huge. I'm loving this setup.