White Instruments 4700 1/3 Octave Equalizer

Rockville REQ231 V2 Dual 31 Band 1/3 Octave Graphic Equalizer w/ Sub-Output!2-pk

White Instruments 4700 1/3 Octave Equalizer

DBX 3231L Dual 1/3 Octave Graphic Equalizer

White Instruments Model 4856 Duel 1/3 Octave Equalizer, Untested

White Instruments Model 4400 Rack Mount Graphic Equalizer - Missing Some Knobs

White Instruments Model 4400 Rack Mount Graphic Equalizer

Alesis M-EQ230 Dual 1/3 Octave Precision Graphic Equalizer Rackmount Studio EQ