EQ Series Features

* S-EQ131 are stereo 31-band graphic equalizer with 1/3 oct.
* S-EQ215A are stereo 15-band graphic equalizer with 2/3 oct.
* S-EQ231A are stereo 31-band graphic equalizer with 1/3 oct.
* Optional range for boosting and attenuating: +/-12dB or +/-6dB
* Fixed Q character
* optional low cut filter
* optional bypass mode
* 5 segment LED level indicator
* Max output level: +20dB/+26dB (balanced)
* Total harmonic distortion: 0.05%
*  Signal noise ratio: 96dB
* Low cut filter: 80Hz 12dB/oct
* S-EQ215A/231A have L/R mix output function of 30Hz-200Hz
   continuously-adjusting low pass filter
* S-EQ215A: 482×195×44.4
* S-EQ231A: 482×142×88.8
* S-EQ131 :  482×142×44.4