Features 1.Professional Grade Control: Dual channel synchronized control of a 15 band digital equalizer with LED spectrum indication for each band and real time 15 band frequency with 99 percent accuracy. 2.Signal Equalization: An equalizer is a sound processor used to achieve a balanced and equalizing effect on sound signals. Precise sound production using intuitive controls through noise gate noise reduction. 3.Adjusting Spectrum Balance: Adjusts the volume of different frequency ranges of an sound signal to make bass, midrange and treble more balanced across the frequency spectrum. Improves the clarity and timbre of the sound by enhancing or weakening the volume of specific frequency ranges. 4.Eliminate Feedback Problems: In live sound applications, equalizer 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 of the sound system. 5.Adjusting Sound Effects: Music spectrum level light 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_ Equalizer Display Area: Approx. 250 x 52mm / 9.8 x 2.0in_x000D_ Power Voltage: DC5V, 7-18V_x000D_ Maximum Current: 0.5A_x000D_ Frequency Response: 20Hz-20KHz_x000D_ Channel: Dual Channel_x000D_ EQ: 15 Band 30dB_x000D_ Equalizer Battery : 1 x CR1220 (Not Included) PackageList1 x_x000D_ _x000D_ MusicSpectrumLevelLight1 x USB Cable 1 x User Manual 1 x Sound Cable 1 x Connection Cable NoteManual measurement, please allow some errors.