【6 Channel Outputs】: This 7 band EQ equalizer supports front left right channels, rear left right channels and 2 subwoofer output channels. 【7 Bands】: The car audio equalizer has 7 equalization bands (63Hz 125Hz 750Hz 2.2KHz 6KHz 12KHz), the subwoofer frequency can be adjusted from 63Hz-12kHz.
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