The RM85 is a 8 channel two zone mixer. Channels 1-4 will accommodate XLR microphone or XLR line level inputs. Channels 5-8 are 1/4″ inputs. All 8 channels can be sent to the two XLR outputs in three configurations; A, B or both A+B. The separate A and B outputs are XLR and either can be selected to be Line or Microphone level output. Channel 8 also has a stereo 3.5mm (1/8″) input on the front of the RM85.Main Features:Input Impedance: Mic: 600 Ohms XLR balanced Line: 22K Ohms RCAMax Input Level: Mic: -14 dBV Mic level Line: +24 dBVTotal input Connectors: 4: XLR, 4: Stereo 1/4″, 1: 3.5mmPhantom Power: +48 VDCRCA Output Level: +17 dBV max (impedance 1K Ohm)Max Gain: Mic: 70 dB Source: 30 dBNoise Floor: – 80 dB, THD: <.025%S/N Ratio: 96 dBVoltage Gain: 32 dBNominal Supply Voltage: 15 VDCBandwidth: 20Hz - 25 kHzSize: 19" x 1.75" x 4" (48.3 x 4.5 x 10 cm)Weight: 7 lbs. (2.3 kg)Power supply: Rolls PS27s power supply 15 VDC 500 mA TIP NEGATIVE.Four XLR balanced inputs with +48 V phantom powerFour stereo Source inputs, including a front panel 3.5mm inputMaster Output Level control for each channelLow noise, efficient operationAll in a single rack space