The RM85 is an 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.