Steve Harris http://plugin.org.uk/
1 Pedalboard using it

Single band parametric

Plugin screenshot
Filter Equaliser Parametric

Control Default Min Max
Gain (dB) 0.00 -70.00 30.00
Frequency (Hz) 440.00 0.00 0.40
Bandwidth (octaves) 1.00 0.00 4.00
http://plugin.org.uk/swh-plugins/singlePara v.0:0.0-2