Connect your instrumental equipment. Connect instruments to the "LINE IN" jacks on the upper left side of the Eurorack using 1/4-inch TRS cables. Connect microphones to the black "MIC" jacks using XLR cables. Do not use more than one input device on a single channel strip (column). For instance, if you connect a microphone to the first column, then connect your guitar to the second column. This will allow you to mix every input separately.
Connect tape recorders and turntables through the red and white RCA jacks on the upper right side of the Eurorack. Use the first set of RCA jacks to transfer audio to your Eurorack, or use the second set of RCA jacks to transfer audio from the Eurorack to your external device.
Connect an effect to your Eurorack processor using the "Aux-Send" and "Aux-Return" jacks. If you wish to filter effects like reverb or delays through the device, an effects processor can help you to achieve this. Connect a TRS cable to either of the "Aux-Send" jacks, and then the "Line-In" on your processor. Connect a second cable to the "Line-Out" on your processor and to the "Aux-Return" on your Eurorack.
Connect studio monitors. Monitor headphones connect to the "Headphones" port on the upper right side, while speakers and amplifiers connect to the "Main Out L" and "Main Out R" stereo jacks, using TRS cables. You can also use the "Main Out" jacks to connect to a PA system, stage box or secondary mixing board.
Adjust the volume for each input using the "Level" knob at the bottom of each column. For instance, if your microphone is connected to the first column, you can control its volume with the "Level" knob in the first column.
Turn the "Pan" knob left or right to set the placement of the input in any given channel strip. For instance, if the "Pan" knob remains centered, your input will sound with equal volume through the left and right speakers. Turn it to the left and your input will sound more prominent in the left speaker. Turn it to the right and your input will sound more prominent in the right speaker.
Turn the EQ knobs to to adjust the frequency range for each input. The "HI" EQ knob controls the treble frequencies, such as bright keyboard keys and guitar solos. Your "LOW" EQ knob controls your deep bass sounds, while the "MID" knob controls everything in between.