The first thing I did on setup was run the MCAAC. Then again when I used a tripod. The loudness setting was very noticable when listening at -18db to the Dave Matthews and Tim Reynolds, Live at Radio City concert. I had the Tone Bass set at +3db. But, for acoustical guitars, that still seemed like too much bass, +2db would probably have been better. I think the recording was probably engineered with bass emphasis and not flat at all.