Frequency Coverage of Each Equalizer Control B0 Ha: Use to boost or Cut the bass, 180 Ha: This control governs the lg-middie range and great influences the overall characteristics of the sound 400 Hz: Use to stadium e power, spaciousness and warmth at the sound, 1 kM2 Use to provide more presence for vocals. kHz: Use 1o boost & brighter sound and to reduce stridency ยง kHz: This contract effects the treble. Use o stadium the brightness of the sound and 1o reduce high frequency incise, such as tape hiss.