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. 1 x Equalizer1 x USB Cable1 x User Manual1 x Sound Cable1 x Knob1 x Connection Cable Item Type: Music Spectrum Level LightMaterial: AcrylicPower Supply Voltage: DC5V 7-18VMaximum Current: 0.5AFrequency Response: 20Hz-20KHzChannel: Dual ChannelEQ: 15 Bands ± 30dBEqualizer Display Area: Approx. 200 x 30mm / 7.9 x 1.2inDSP:Sample Rate: 48KHzInput Gain Adjustment Range: -6 To+42dbOutput Gain Adjustment Range: -52 To +12db.AGC Adjustment Rate: -3db To-27dbModulation Range: -8 To +8 Degrees.EQ Frequency Points: Logarithmic 15 BandsEQ Data Sets: 6 Presets, 10 Individual SettingsBuilt In Silicon Microphone, Can Be Used Without Microphone.Dial Operation To Switch The Display Mode, Encoder Operation To Control The DSP SoundEqualizer Battery Specifications: 1 x CR1220 (Not Included)