Crane Song Ibis, Stereo/ Dual Mono Class-A Equalizer, Each of its four bands features switch-selectable frequencies centered on and covering musical-step intervals from 32-Hz "C" to 22.35-kHz "F." Its four overlapping bands are labeled with note names and frequency allowing for the first time a "translation" between musician-speak and engineer-jargon. The bandwidth control has similar notation with adjustment from 0.1 octave to 4 octaves per band and a boost / cut range of 12 dB, In-/Outputs bal. XLR, Dimensions: 19" 2U