Available as an assembled Module and as a DIY project.
This Module is currently available.
EQ add-on for the ez1073 module
AML-17-042 - ez1073- Addon EQ - Full Kit - (500 series Class A Equaliser for use with AML-17-038)
ez1073eq Full kit - (500 series Class A Equaliser)
http://www.audiomaintenance.com/acatalog/aml%2d17%2d042%5fextended%5finfo%2ehtml