Haven't tried the Harmonic Quad. If your going to spend a significant amount of money Why not get an Atelier Robin. You will then be able to go to any frequency in its range. I can run 3 frequencies at once on my F165 Atelier Robin up to 20 MHz with as many options as I can dream up. An F125 is $500 and has 2 channels with one that will go up to 1.5 MHz.