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A audio mixer is a device that combines all of the inputs and outputs from the individual channels into one big signal. It also has additional features for manipulating the sound, such as EQ (equalizer), panning, compression and reverb.
Most audio mixers include balanced XLR input jacks and 1/4" TRS (tip, ring, sleeve) output jacks for the best possible noise-free wiring connections. Most of the audio mixer's channel inputs have a built-in preamp that boosts the incoming signal to the correct level for recording. If using a condenser mi
crophone, there's usually a switch to enable 48-volt phantom power for the mic.
Most audio mixers feature track busses, which are groups of channels that route their signals to other channels, a stereo mix or to an external piece of hardware such as a compressor. Some mixers may contain anywhere from four to sixteen track buses. Most mixers also have a cue system, which lets you listen in on a specific channel before or after the fader affects it. This is very useful for troubleshooting a signal. Lastly, most mixers have pan pots, which adjust the left/right width of the resulting stereo mix.
A digital audio mixer is a piece of equipment that mixes, balances and effects the sounds from devices that plug into it. This includes instruments, microphones, and even some recording gear. The mixer also routes channels into a bus that sends the sound to speakers or processing gear via physical outputs.
Depending on how a venue is using the mixer, these outputs may be set up as monitor (or cue) sends or to feed time-based effects like delay and reverb. Often the outputs are assignable by either setting the channel layout to the send mode or via the master control section. Many small digital mixers don't include a dynamics processor but larger ones may feature an extensive set of onboard effects that can be used individually or in combination.
Digital mixers can store settings and logical group assignments in memory for reuse. If an engineer sets up level assignments for multiple microphones, monitors and instruments during one night of a performance, the configuration can be saved and named for later use. When the mix is ready to go, a simple touch of a button can recall this setup.
A few other features to consider when choosing a digital mixer include headphone ports that accept 3.5 mm connections or the more common 6.35 mm connections, as well as a switch that provides phantom power for microphones that require it. It is also wise to invest in a sturdy, custom mixer case that will protect the unit during transport between venues. Some mixers come with a software application that can be used to control the most sought-after functions from an iPad, iPhone or Android device. This can be useful when an engineer is away from the board and wants to adjust a specific parameter.
An audio interface mixer is a great way to record the raw audio you need to make the final product. Whether it's for music production, podcasting or streaming, an audio interface is essential to any home recording studio. They take whatever sound you are recording and transform it into a digital signal your DAW (digital audio workstation) can translate into a variety of effects and edits. This is the crucial step to achieving professional results from any creative endeavor.
However, many musicians are not quite ready to ditch their trusty mixer and replace it with a standalone audio interface. The good news is that most audio interfaces can double up as a mixer, at least in some instances. There are a few considerations to keep in mind though, including the number of input and output channels.
In order to successfully use your audio interface as a mixer, you must first ensure that it has enough channels to accommodate your setup. This will depend on how many microphones and instruments you plan to plug in. If you're planning to use a lot of mics and instruments, consider getting a higher channel count.
