How to Connect a Mixer to an Amplifier

Are you trying to get the most out of your home studio? While you could use your headphones, there’s a lot more by connecting a mixer to an amplifier diagram.

And in this guide, we’ll give you the critical information needed to use them both successfully.



What is an Amplifier?

Before we can learn about connecting a mixer to an amplifier diagram, we must know the general definition of amplifiers and mixers.

An amplifier is a device that increases the voltage, current, or volume of an audio signal.

Amplifiers are used for electronic devices, computers, and music equipment to increase the signal.



How Do Amplifiers Work?

Amplifiers work by increasing a small input signal to create a more significant output signal. In addition, amps take in the electrical signal that has musical frequencies and increases their strength.

When in use, amplifiers increase their power enough to create air pressure variations (waves).

This works by receiving power from a power supply and increases the output to meet the input signal. The process introduces distortion and noise to the signal, and it’s unable to be efficient at increasing the gain without experiencing loss.



Types of Amplifiers

  • Voltage Amplifier: This amplifier will amplify a voltage to create a large volume output. This involves a high input impedance and low output impedance.
  • Current Amplifier: Current amplifiers increase the input current. They are the opposite of voltage amplifiers because of their high output impedance and low input impedance.
  • Transresistance Amplifier: It converts the output voltage to the input current. Transresistance amplifiers are also called current-to-voltage converters.
  • Transconductance Amplifier: Transconductance amplifiers change the output current based on the fluctuating input voltage.


There are additional types outside of these basic amplifiers according to their operation, application, and characteristics. Amplifiers are based on linearity, signal gain, efficiency, and power output based on their characteristics.


  • Instrument amplifiers: Instrument amplifiers are used to intensify the voice, music, or sound.
  • Transistor amplifiers: Engineering students tend to use transistor amplifiers. They include bipolar junction transistors and field-effect transistors.



Amplifier Classes

Still, there is more to amplifiers. Here are the amplifier classes that are currently available:


Class A

Class A amplifiers are the most common due to their simplified design. It has a low-level signal distortion which provides the best sound.

However, class A amps have low efficiency as they are more susceptible to power loss. Thus, these amps should not be used for high-power applications.


Class B

Class B amplifiers are designed to solve efficiency and heating. It consists of a positive and negative transistor, which increases its efficiency.

As a result, Class B amplifiers are stable and reliable but at a lower heat input.


Class AB

Class AB amplifiers are a mixture of A and B power amplifiers and have two transistors together. It uses both Class A and B and works like an audio amplifier.

There is no crossover distortion, and the transistors remain fairly efficient.


Class C

Class C amplifiers are the most efficient amplifier, but it has a low operating cycle and linearity. This amplifier isn’t recommended because of its high input distortion.

Instead, Class C amplifiers are used for radio frequency applications that require high efficiency. It uses two operating modes: untuned and tuned.


Class D

Class D amplifiers are used to convert analog signals to digital via pulse modulation or density modulation. It creates less distortion, efficiency, and high gain.

While it has a low dissipation and power output, Class D amplifiers generate a precise and accurate output.



What is the Difference Between a Preamp and a Power Amp?

While both may seem similar, preamps and power amps have different jobs. A preamp is used before needing a power amp. Preamps are designed to improve a weak output signal line by delivering high amounts of gain.

Power amplifiers are used to increase the line signal so it can go through the speakers at a high volume. The performance of a power amp depends on the speaker’s resistance load.

Recommended: 6 Best 1500 Watt Amp



Mixers Explained

Mixers are used to change the audio signal quality. They arrange multiple input audio signals and provide balance to the sound.

Also, mixers can adjust the output audios and make them easier to listen to.

Like amplifiers, there are a variety of mixers available that perform a different set of tasks.



Types of Mixers

Just like amplifiers, there is a myriad of mixers to create a high-quality sound. Here are the most common mixers that are available:


Digital Mixer

Digital mixers can process input audio signals. The volume and tone are adjusted via digital signal processing technology.

Also, digital mixers can store knobs and faders, instantly recall positions, and provide a myriad of great functions.


Analog Mixers

Unlike digital mixers, analog mixers don’t have volume control.  That is because analog mixers adjust the tone and volume via input signals.

It is easier to recognize the signal flow because the faders and control knobs are located on top of the panel.


Powered Mixers

Powered mixers have inbuilt amplifiers; this allows the sounds to be played once it’s connected to the speakers.

The mixers are easy to use and can connect to equipment by turning it on.



How to Connect a Mixer to an Amplifier

After going in-depth with mixers and amplifiers and how they work, how do you actually pair them together? Follow these steps to learn how to connect an amplifier and mixer with no hassle.


Step 1

Start by unplugging both devices from electrical connections. This prevents damage and short-circuiting when connecting the mixer to the amplifier diagram.

Next, position the speakers where you want. Make sure you straighten out and spread out the speaker cable and make sure there are no extra cables on the bottom of the speaker.


Step 2

Plug the left cable to the “L” jack (which is located behind the mixer component). Then, connect the plug to one of the speaker cables to the audio mixers out jack. The jack is found in the back of the device. However, some mixtures feature a monitor system.

If you’re using a monitor, plug the speaker cable into the “L+R” jack. This allows you to chain the speakers and show both the “L/Monitor” and an “R/L+R” on their respective jacks. In addition, you’ll find a switch that allows you to use the monitor and speakers.


Step 3

After inserting the plugs in step 2, place the red wire onto the right and white wires onto the left. Once the speaker cables are connected, ensure that they are secure.

If you’re running jacks from the mixers to the speakers, make sure they are plugged directly. This will put the amplifiers together and free the mixer’s monitor jack.

The two jacks behind the speakers will work together. If you have a monitor setup, plug the cable from the mixer directly to the speaker. On some occasions, you can place the line of the mixer to the left speaker. You can set the right speaker cable to the left speaker.


Step 4

Next, place the power cords, plug them into an outlet, then turn it on. First, turn on the mixer then the amplifier, which allows you to adjust the output volume control.

After that, you should plug in the amplifier selector knob to the audio input jacks and connect it to the audio mixer. This allows you to adjust the amplifier’s volume, frequency, and tone to your preferences.


Step 5

After completing these steps, check the volume controls and the connection. If the amplifier is connected to the speakers, and your mixer shows an audio signal, then you’ll notice a positive change in sound quality!




Still, you might come across a few problems when connecting a mixer to an amplifier diagram. Here are some tips to help solve common issues:


  • Please turn off the mixers before disconnecting or connecting them to the sound system.
  • Once the equipment is turned on, determine if the volume control is tuned to both the amplifier and the mixer, then inspect the input channel level control.
  • Check your headphones to see if any sounds are present.
  • If your equipment is broken, don’t waste time fixing it yourself! Take it to an authorized technician or personnel.
  • Check the amplifier and mixer cables and make sure there is a secure connection. This includes the connection between both amplifiers and mixers.
  • Never run a separate amplifier with separate speakers, as this will damage them.
  • Check the circuit breakers and fuse because the connection might turn the power and audio signal off.




To conclude, connecting the mixer to the amplifier diagram is the best way to get the most sound opportunities. When installing it, always check the instruction manual of the mixer and amplifier.

Doing this will make the connection process easier and reduce mistakes in the process.

Once they’re paired together, you’ll notice a dramatic change in your sound quality. Whether you have a large sound system or a small home studio, mixers and amplifiers will bring your sounds to life!

Read Also: How to Connect a Subwoofer to An Old Amplifier?


How to Connect a Mixer to an Amplifier Pin



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Is a musician and journalist with over 13 years of experience writing for some of the music world's biggest brands. Ray loves getting nerdy about everything from guitar gear and synths, to microphones and music production hardware.

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