Here's the description of the parametric eq function on the 9855 from crutchfield:
"You can select a frequency for each of the following bands in 1/3-octave increments: Band 1 (20Hz-160Hz), Band 2 (50Hz-400Hz), Band 3 (125Hz-1kHz), Band 4 (315Hz-8kHz), and Band 5 (800Hz-20kHz). Once a frequency...