Features 1.Professional Grade Control: Dual channel synchronized control of 15 band digital equalizer, LED spectrum indication for each band, real time 15 band frequency with 99% absolute accuracy. 2.Equalizer: Precise sound production using intuitive controls through cutting edge noise gate noise reduction. An equalizer is an sound processor used to adjust the volume or gain of different frequency ranges in an sound signal to achieve a balanced and equalizing effect on the sound signal. 3.Adjusting Spectral Balance: An Equalizer adjusts the volume of different frequency ranges of an sound signal to make bass, midrange and treble more balanced across the frequency spectrum. By boosting or diminishing the volume of specific frequency ranges, sound clarity and timbre can be improved. 4.Eliminate Feedback Problems: In live sound applications, equalizers can be used to eliminate feedback problems in an sound system. By attenuating the volume of a feedback frequency range, feedback sounds can be reduced or eliminated, improving the stability and reliability of the sound system. 5.Adjusting Sound Effects: Equalizers can be used to adjust special effects in sound, such as increasing bass effects and emphasizing vocals. By adjusting the volume of different frequency ranges, various sound effects can be customized and adjusted. specificationItem Type: Music Spectrum Level Light_x000D_ Material: Acrylic_x000D_ Power Supply Voltage: DC5V 7-18V_x000D_ Maximum Current: 0.5A_x000D_ Frequency Response: 20Hz-20KHz_x000D_ Channel: Dual Channel_x000D_ EQ: 15 Bands 30dB_x000D_ Equalizer Display Area: Approx. 200 x 30mm / 7.9 x 1.2in_x000D_ DSP:_x000D_ Sample Rate: 48KHz_x000D_ Input Gain Adjustment Range: -6 To+42db_x000D_ Output Gain Adjustment Range: -52 To +12db._x000D_ AGC Adjustment Rate: -3db To-27db_x000D_ Modulation Range: -8 To +8 Degrees._x000D_ EQ Frequency Points: Logarithmic 15 Bands_x000D_ EQ Data Sets: 6 Presets, 10 Individual Settings_x000D_ Built In Silicon Microphone, Can Be Used Without Microphone._x000D_ Dial Operation To Switch The Display Mode, Encoder Operation To Control The DSP Sound_x000D_ Equalizer Battery s: 1 x CR1220 (Not Included) PackageList 1 x Equalizer 1 x USB Cable 1 x User Manual 1 x Sound Cable 1 x Knob 1 x Connection Cable