Stereo 1/3 Octave equalizer Connections: XLR, TLS, Cubicon Bands: 30 per channel, +/- 15dB constant Q Seen meter LED 8 segments per channel Automatic bypass on power off Variable high pass filter (0 to 250 Hz) Low contour: +/- 6dB @ 50 Hz High contour: +/- 6dB Opal FCS-966 with separate LF and HF contour filters which can change an overall sound balance without disturbing a detailed room or loudspeaker response. These filters are very musical & gentle boost and cut shelving filters which can be used to add (or remove) room effects that change with temperature, audience numbers or humidity. All these effects can be easily made without disturbing the critical fader settings already made. Input Impedance: 10kOhm, electronically balanced Output Impedance: < 50 Ohms, electronically balanced FREQUENCY bands: +/-15dB on ISO centres with a Q of 4