Aux vs Coaxial (The Truth)

Norvan Martin
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Coaxial and auxiliary cables are two separate types of cables, each with different uses and functions.

Auxiliary cables, often known as aux cables, are a type of connection that is frequently used to connect audio equipment, such as speakers, amplifiers, and vehicle stereos, to other equipment, including smartphones, tablets, and MP3 players. It features a 3.5mm connector on both ends.

On the other hand, coaxial cable is a form of cable that is frequently utilized for the transmission of high-frequency electrical impulses and video signals. It is made up of a metallic shield, an insulating layer, and an outer insulating layer that surround a copper core. Numerous devices, such as cable TV, internet connections, and CCTV systems, employ coaxial wires.

In this article, we will discuss the benefits, demerits, pros, and cons of aux and coaxial cables.

Auxillary Vs Coaxial Comparison Table

Connector Type3.5mm stereo jackRCA or BNC connectors
Use CaseConnecting audio devices to speakers or headphonesAudio and video connections in home theaters, audio systems, and digital audio devices
Signal TypeAnalog audioAnalog or digital audio/video
Maximum Cable LengthShorter cable runsSupports longer cable runs with minimal signal loss
FlexibilityMore flexible and suitable for portable devicesLess flexible, thickness varies based on application
ShieldingLess shielded, may have basic shieldingGenerally well-shielded to reduce interference
CompatibilityWidely compatible with a range of audio devicesUsed in various applications, including audio, video, and data connections
Sound QualityGood for analog audioOffers high-quality audio transmission, especially in digital setups
CostGenerally more affordablePrices vary based on quality and application

Auxiliary Cable

The fact that aux cables are made to be flexible and portable is one of their primary characteristics. They are convenient to use with a variety of devices since they are lightweight and relatively tiny. They may also be utilized with a range of audio equipment, such as computers, MP3 players, cellphones, and tablets.

Auxiliary cable

A plastic insulating layer is usually wrapped around a copper wire, which is how aux cables are often constructed. This design guarantees that the audio stream is transferred clearly and without distortion while also reducing interference.

However, compared to other types of audio connections, such as coaxial or optical cables, the signal sent via an aux cable is often not as powerful or clear.

Coaxial Cable

Coaxial cables are a particular kind of cable that are used to transfer both audio and visual data. A metallic shield, an insulating layer, and an outer insulating layer surround a center conductor composed of copper wire. The metallic shield guarantees that the signal is delivered clearly and without distortion while assisting in the prevention of interference.

Coaxial Cable

The ability of coaxial cables to transfer signals across great distances is one of its primary characteristics. They are therefore perfect for usage in systems like CCTV, cable television, and internet connections.

Coaxial cables may also transport high-frequency signals, making them perfect for sending digital signals like those for high-definition television or high-speed internet.

Coaxial cables are less portable than aux cables since they are often bigger and heavier. They might be more challenging to install and are also more costly.

They are perfect for usage in areas where signal quality is extremely important since they can deliver stronger and cleaner signals than aux cables.

Differences Between Aux and Coaxial Cable

The main and most obvious difference between aux and coaxial cables is their intended use. Coaxial cables are made for longer-distance transmission of digital and high-frequency signals, whereas auxiliary cables are made for short-distance transmission of analog audio signals.


Coaxial cables are formed of a center conductor encircled by an insulating layer, a metallic shield, and an outer insulating layer, whereas aux cables are normally made of copper wire that is covered in a plastic insulating coating. Coaxial cables are more costly and less portable than aux cables since their structure is more complicated.


Coaxial connections often deliver signals that are crisper and stronger than aux cables do. This is because coaxial cables are excellent for transferring digital communications since they can send high-frequency signals. Contrarily, analog signals—which are often weaker and less clear than digital ones—are sent through auxiliary connections.


Auxiliary and coaxial cables are both made with interference-free, distortion-free signal transmission in mind. Coaxial cables are appropriate for use in areas where signal quality is of the highest significance since they normally do a better job of avoiding interference than aux cable 

Similarities Between Aux And Coaxial Cable

Signal Transmission

Although they are designed to transmit different kinds of communications, both Auxiliary and coaxial cable are utilized for transmitting signals. Both cables transport signals clearly and without distortions. 


Auxiliary and coaxial cables both include common, widely-used connection styles that are appropriate for a variety of devices. Coaxial cables may include many types of connections depending on the application, such as F-type, BNC, or RCA connectors, whereas aux cables normally have a 3.5mm jack on both ends.


Coaxial and aux cables are shielded in some capacity to reduce interference from other electrical equipment. Coaxial cables include an extra metallic shield layer to prevent electromagnetic interference, whereas auxiliary cables have a plastic insulating layer to protect the copper wire which makes them durable.


Most electronics stores and internet vendors have aux and coaxial cables, and they are both commonly accessible. In comparison to other types of cables like optical cables or HDMI cables, they are also reasonably priced.


Auxiliary Cable

  • Aux cables are portable and simple to use with a variety of devices since they are light and small.
  • Aux cables work with a range of audio equipment, including laptops, MP3 players, cellphones, and tablets.
  • Aux cables are simple to use and don’t need any additional installation or setup.

Coaxial Cable

  • Coaxial cables can transport audio and video signals of the highest quality over great distances with little loss or diffraction.
  • Coaxial cables are insulated to reduce interference from outside electrical equipment, resulting in a strong and clear signal.
  • Coaxial cables have a wide range of uses, including home entertainment systems, cable television, and internet connections.


Auxiliary Cable

  • Compared to other types of audio connections, such as coaxial cables, the analog audio signal sent via an aux cable is often not as powerful or clear.
  • Aux cables are sensitive to interference from other electrical equipment or sources, which might cause the audio stream to become distorted or noisy.
  • Aux cables are made to send audio signals over a relatively small distance, usually no more than a few meters.

Coaxial Cable

  • Coaxial cables cost more than other kinds of audio cables, such as aux cables.
  • Coaxial cables require specialist connections or adapters and are more difficult to install and operate than other types of audio cables.
  • Coaxial cables may transport signals over great distances, but after a certain point, they may suffer from signal loss or degradation, particularly if the signal is shared among several devices.


Aux and coaxial cables are two common varieties of audio cables with various advantages and disadvantages. Aux cables are a popular option for connecting audio devices over short distances since they are lightweight, adaptable, and simple to use.

Coaxial cables, on the other hand, can transfer high-quality audio and video data across considerable distances with little loss or distortion. The decision between aux and coaxial cables ultimately comes down to the particular application as well as the wants and demands of the user.

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Norvan Martin is the founder of He is a professional Electronics Engineer and is passionate about home theater systems and AV electronics. BoomSpeaker was created as an online hub to share his knowledge and experiences as it relates to home theaters and home audio electronics. My email: [email protected]  Connect on Pinterest and Linkedin