Features 1、LCD Indicator: The digital spectrum equalizer features 15 band DSP processor and LCD indicator lights of each band, offering real time visualization of 15 frequency points. 2、Enhanced Performance: The sound spectrum level equalizer is equipped with for ARM‑CortexM3 processor for multiple display modes, built in DSP processor, and outstanding interference resistant and anti noise abilities. 3、Wide Frequency Range: The DSP spectrum display analyzer features resolving frequency range of 20 to 20KHz, 15 level resolution, 10 built in modes, and professional sound analysis for both mono and stereo channels. 4、Versatile Use: The DSP processor of this spectrum display indicator allows dual channel 15 band equalization adjustment with gain up to ±30db, supporting AGC for wide application in audio processing and display settings. 5、Digital Equalizer: Filter capacitors adjust sensitivity to high mid low frequencies, creating a wide sound field for easier singing and richer live sound experience. Specification Item Type: Music Spectrum Equalizer Band Indicator: 15 Bands Frequency Response: 20Hz-20KHz Sensitivity: >-40dB (94 dB SPL at 1KHz) Channels: Dual Channel EQ Gain: ±30db Battery Model: CR1220 Battery Capacity: 40mAh (Included) Package List 1 x Music Spectrum Equalizer 1 x User Manual 1 x Sound Cable 1 x Charging Cable 1 x Knob Cap 1 x 2 Pin Power Cord