FEATURES:[ Four unbalanced jack inputs for connecting your line or instrument signal [ Unbalanced jack outputs [ With four volume controls [ No power supply via power unit or battery necessary [ Can also be used as 4 in 1 or. 1 in 4 adapter [ Input impedance: 47 kOhms [ Output impedance: 12 kOhms [ Gain: -13 dB [ Frequency range: 20 Hz - 20 kHz [ S/N-ratio: >100 dB [ Dimensions: 95 x 73 x 40 mm [ Weight: 300 g ";