Professional dual channels stereo graphic equalizer.31-band design with ±6 or ±12db adjustable range for each channel.LOW-CUT switch for effectively eliminating the low frequency noise.BYPASS switch for convenient machine debugging.Input gain knobs with ±12db adjustable range.XLR balanced and 1/4" TRS unbalanced inputs & outputs.Standard 2U rack mount design, easy installation.Specifications:Material: MetalColor: BlackInput Impedance: 20K� Unbalanced/ 40K� BalancedOutput Impedance: 330�Frequency Response: 20Hz~20KHz ±-1dbTotal Harmonic Distortion: 0.05%Signal to Nosie Ratio: >95dBPlug: USWorking Voltage: 110-240VItem Size: 48 * 13 * 9cm / 18.9 * 5.1 * 3.5inItem Weight: 2.6kg / 5.7lb