I recorded Steve Miller at Red Rocks last night. I was in the 6th row just to the right of the right side stack. I used an inexpensive SP-SPSM-1 single point stereo mic w/ a SP-SPSB-2 battery box set at 95Hz into an H120 (Rockboxed). Levels showed plenty of headroom. I used this mic to achieve the smallest footprint possible being up close to security. Sound like brickwalling to you?