Used fully functional Rane ME 30 Constant-Q EQ, $50 plus shipping from 20190. Single channel, one rack space, 31 band (1/3-octave) EQ with 20mm sliders. Front panel controls include level control, range (+/- 6 or 12 dB), bypass, power on/off and an overload indicator light. XLR and TRS connectors, IEC power cable, not a wall wart.
Unit is enclosed in the red rectangle in the picture.
Unit is enclosed in the red rectangle in the picture.