231 Dual Channel 31-Band Graphic EQ

With a lineage extending back to the revered 12 and 20 Series graphic
equalizers, the dbx® 231 easily lives up to the dbx reputation at a
price point which can find a home in the tightest of budgets. Besides
including two 31-band channels of 1/3-octave equalization, the 231
also offers ±6 or ±12 dB ...