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. Individual bands can be switched on and off.
IIEQ free 10-band equalizer is available for Windows (32/64 bit) and Mac (32 bit). Alternative GUIs are available for Windows 32bit only.