For years I've run dual-band compression by running the biamp output of whatever pre I was using into a rack-mounted 2-channel compressor. Then, summing the outputs with a Y connector before going into the power amp. It occurred to me that I could save some wire clutter, reduce possible points of failure, and save the expense of the y-connector if I simply go into the compressor and hard-wire the outputs together. Electrically, this is the same as what I have been doing for years with the Y-connector. The grounds are already connected so I would just need one wire to connect the conductors going to the tips of the output jacks. I could get fancy and put a SPST switch in the added wire to make the mod switchable. I think there is a Rane model that has this feature (ability to sum the outputs), maybe the DC24. Is it possible that this is all they are doing or is there something fancier that they are doing and I should be doing?