Rack-mountable 1U mixer with 4 mic inputs and 3 auxiliary inputs. Mic channel 1 has 20V phantom power and adjustable voice-over muting of auxiliary channels. An additional priority input can be connected to a line level input or an external 100V line PA system for emergency paging. Output connections are stereo jack with master bass and treble tone controls. Designed as a master or extension mixer for installed sound systems.Power supply: 100-240Vac, 50/60Hz (IEC) or 24Vdc (terminals)vbCrLfFuse: T1AL 250V (mains) or F500mA (24Vdc)vbCrLfPhantom power: +20Vdc (mic1 XLR input only)vbCrLfInputs : mic: 4 x balanced 6.3mm jack (+XLR for mic1)vbCrLfInputs : aux: 3 x L+R RCAvbCrLfInputs : priority: Line level (6.3mm jack), 100V (terminals)vbCrLfOutputs: Left + Right 6.3mm jack (unbalanced)vbCrLfControls: 4 x Mic level, 3 x Aux level, Treble, Bass, L+R outputvbCrLfRear panel controls: Aux muting level, priority input levelvbCrLfInput impedance: 2.2k Ohms (mic/line), 10k Ohms (aux)vbCrLfFrequency response : mic: 130Hz - 21kHzvbCrLfFrequency response : line: 120Hz - 26kHzvbCrLfFrequency response : aux: 50Hz - 35kHzvbCrLfInput sensitivity : mic: -50dBVvbCrLfInput sensitivity : line: -19dBVvbCrLfInput sensitivity : aux: -12dBVvbCrLfSignal to noise ratio : mic: 54dBvbCrLfSignal to noise ratio : aux/line: 58dBvbCrLfTHD: 0.05%vbCrLfDimensions: 482 x 130 x 44mmvbCrLfWeight: 1.43kg