The HVQ231/HVQ131 offers 31 band graphic equalization with 1/3 octave filters and superior constant “Q” devices. Offering the ability to increase signal-to-noise ratio by up to 20dB,the STK HVQ EQs make improvement in noise specs of almost any sound systems. The HVQ131 is a 1/3 octave single 31 band graphic equalizer in a 2 rack package. The HVQ231 is a 1/3 octave dual 31 band graphic equalizer in a 3 rack package,The long throw, high resolution faders allow precise adjustment of each constant Q band. The HVQ131/HVQ231 has built-in noise reduction and an on board limiter. Logical LED meters are present for level and gain reduction.

• 21 dBu capacity for input and output level circuits
• The unit is dual range +/-15dB or +/-6dB boost and cuts..
• Inputs/Outputs are balanced XLR, Barrier strip and unbalanced 1/4” phone jack.
• A switchable 18dB/octave low cut filter is preset to 40Hz.
• Ultra low noise 100dB, 0.001% THD