231 Graphic equalizer Two 31-band, 1/3-octave Constant Q frequency bands Switchable boost/cut ranges of ±6 or ±12 dB 12dB per octave 50Hz low-cut filter Front panel bypass switch ±12 dB input gain range 4-segment LED ladders for monitoring output levels XLR and TRS Inpts and Outputs Internal Toroidal Transformer Frequency Repsonse of <10Hz to >50kHz Dynamic range of greater than 108dB INPUT