Here is a dbx 231S 2-Channel Graphic Equalizer up for sale. An amazing option for digging deep into a tone and sculpting it to perfection, this graphic EQ boasts not just one, but two channels, allowing for two people to plug in at once and take advantage of the whopping 31 bands that this 231 EQ sports. It's got some light signs of wear, but it's still in very good condition and is waiting for a new home!