I seem to have found a nice tone improvement by switching up use of the volume knobs. I tried the master volume knob cranked to 10, using the preset volume to adjust loudness of the output, I find the tone to be much more pleasing. There is added dimension, and reduction of harshness or brittleness. Can anyone else confirm or discount this? I recently demo'd a Hot Rod Deville in a music store and could immediately hear a fullness and clarity to the clean tone from that amp that I wasn't able to get out of the neighboring MIV. Using the volume knobs this way on my MIII seems to close some of the gap with the HRD. Hoping it's real and not placebo!