The IIEQ is a free, fully parametric 10-band equalizer with its own, characteristic sound and low CPU consumption.
The 1st and the 10th band are low and high shelf filters, respectively; all other bands are peak filters.

Main features:

    * Minimum phase IIR EQ.
    * Low shelf with gain and and cutoff frequency, high shelf with gain and cutoff frequency plus 8 peaking filters with gain, center frequencies and Q.
      The gain can be  20 dB.
    * Overall output level control with VU meter to avoid overshoots.

http://www.ddmf.eu/