... BSS FCS-966 Graphic Equalizer, Audio Opal, EQ,High-Pass Filter; BSS FCS-966 Graphic Equalizer, Audio Opal, EQ,High-Pass FilterBrief Instrution ... :BSS Audio provides the Opal FCS-966 Constant Q Graphic Equalizer with ... signal when EQ is bypassed) from -24dBu to +18dBu in 8 stepsBSS Audio Opal FCS-966 Graphic Equalizer Specifications:HP ...