Feature 17 Adjustable Bands: Chassis graphic equalizer with built in low pass filter, 7band graphic equalizer (50Hz, 125Hz, 315Hz, 750Hz, 2.2KHz, 6KHz, 12KHz). 2Characteristic: 7band car audio graphic equalizer with variable gain adjustment and high level speaker input, very practical in use. 3With Control Volume: Car audio graphic EQ includes light independent main volume and subwoofer control volume with volume controller. 4EQ Parameter: Subwoofer frequency is 35250HZ, signal to noise ratio is 90dB, channel separation ratio is 70dB and frequency response is 15Hz30KHz (3dB). 5Front Rear Sub Output: Car audio equalizer EQ, front, rear and subwoofer output, Includes mounting brackets and screws for easy installation.Item Type:CarAudioGraphic EqualizerMaterial: MetalVoltage: 11-15V DCPre Image Frequency: 50Hz, 125Hz, 315Hz, 750Hz, 2.2KHz, 6KHz, 12KHzEqualization Range: 18dBSubwoofer Frequency: 35-250HZInput Impedance: 10K OHMSSignal To Noise Ratio: 90dBTHD: 0.05%Channel Separation Ratio: 70dBFrequency Response: 15Hz-30KHz (-3dB)Application Range: Universal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x CarAudioGraphic Equalizer1 x Manual4 x Screw2 xAccessories