DBX 231 - 31 Channel Dual-Band Graphic Equalizer

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dbx 231 Dual-Channel 31-Band Graphic Equalizer

DBX 231s Dual Channel 31-Band Graphic Equalizer

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dbx 1231 Dual Channel 31-Band Analog Graphic Equalizer

dbx 1231 Dual Channel 31-Band Graphic Equalizer, rack mount, grey.