Main Input Connectors: XLR and 1/4 jack Type: HF filtered, servo balanced input Impedance: 50 kOhms balanced, 25 kOhms unbalanced Max.input level: +21 dBu balanced and unbalanced CMRR: typ.40 dB, >55 dB @ 1kHz AUX IN andDIRECT IN input Connectors: 1/4" TRS (tip=left, ring=right, sleeve=ground) Type: Unbalanced Impedance: 25 kOhms Unbalanced Max.input level: +21 dBu unbalanced CMRR: typ,40 dB, >55 dB @ 1 kHz