BURWEN BOBCAT TONE BALANCER - MORE TREBLE
A few dB boost in the 800 Hz range greatly increases clarity in muddy sound systems.  The curve has only 9 dB boost at 15 Hz vs, 14 dB in Balanced.  
None of the tone settings in this demonstration will be just right for your particular sound system, room, and recording.  The illustrated range will give
you an idea of how to set the sliders for one high quality symphonic recording.