[guitaniac]

Here's the relevant info from the Anthem SL user guide. As we can see, the adjustment screw does indeed adjust the mic level with this particular system. (The adjustment screw is a tone or "presence" control with the Lyric system.) As we can also see, these instructions do indeed mention the possibility of excessive handling noise with a high mic level setting. I'm still thinking, though, that its an unusual situation when the mic level needs to be turned all the way down to balance properly with the undersaddle pickup. Its possible that the UST is under-performing for some reason - perhaps one of the reasons that I've already mentioned.



A. MIC LEVEL CONTROL (Adjusts the level of the Tru •
Mic relative to the level of the Element)
IMPORTANT: Setting this control correctly is vital to the
sound of the Anthem system.

Play through a P.A. or acoustic amplifier while you
are making adjustments. A small flat-head jeweler’s
screwdriver will be needed.
Your amplified tone should be well balanced and true to
the acoustic sound and feel of the guitar. If it lacks clarity
and top-end, increase the mic’s level by turning the
control clockwise. Back it off slightly If you experience
excessive handling noise and/or brightness