i do the same and there is no loss of fidelity at all. Right now I'm running to a Roland 150 through the monitor (input 4) channel. I am looking at the QSC K12 powered speaker as the dedicated output for my Helix, both when running a PA and when just using a stand alone speaker. Any thoughts out there on the best speaker choice for the Helix? I've run the output through a few guitar amps, but they color the sound and really just defeat the purpose of the Helix.