Stereo 15 band graphic equalizer
Stereo 30 band graphic equalizer
Stereo 28 band programmable equalizer
Stereo 28 band slave equalizer
Q2031B from Yamaha is a dual channel thirty-one band, 1/3 octave graphic equalizer housed in a 19" rack-mount chassis. Balanced inputs and outputs allows the unit to function equally well in both a live or studio situation