Skip to content

What is Digital Audio Out in Smart TV? Optical Digital Audio Connection Explained

Hey there! Some links on this page are affiliate links which means that, if you choose to make a purchase, I may earn a small commission at no extra cost to you. I greatly appreciate your support!

Last Updated on 2 years by On Trends Gear

Smart TVs have come a long way in the past few years, and one feature that has become increasingly popular is Digital Audio Out.

This technology allows you to connect your TV to an external speaker system, allowing you to enjoy high-quality audio from your TV.

 In this blog post, we’ll explore what Digital Audio Out is and how it can improve your TV-viewing experience. 

Table of Contents

Fast Way to Connect Digital Audio Out With External Speakers

Connecting digital audio out with external speakers is one of the most convenient ways to get great sound quality from your audio equipment.

 Here is the fastest way to Connect them.

If you want to add a tv with optical output, This is a tutorial on How to Connect TV Digital Audio Out to External Speakers

Step #1

Start by connecting the external speakers to the digital audio output port. 
Most modern speakers come with a cable that will connect to the port.

Step #2

Make sure the external speakers are powered on and that the power switch is in the “on” position.

Step #3

Open the audio settings on your device and make sure the digital audio output is set to the external speakers.
 This can be done through the device’s settings menu or a specific audio app.

Step #4

If the device has a volume control, make sure the volume is set to the desired level.

Step #5

Test the connection by playing some audio from the device. 

If it is not playing correctly, make sure the cables are firmly connected and the audio settings are correct.

Step #6

Adjust the audio settings and the external speaker’s volume level until the desired sound is achieved.

Similarities & Differences Between Audio Out And Digital Audio Out?

Similarities Between Audio Out And Digital Audio Out

  • Both Audio Out and Digital Audio Out are used to output audio signals from a device.
  • They are both used to connect a device to external audio devices such as speakers or headphones.
  • Both Audio Out and Digital Audio Out connections can be used to deliver quality sound.

Difference Between Audio Out And Digital Audio Out?

Audio OutDigital Audio Out
Audio Out is the analog signal outputDigital Audio Out is the digital signal output
Audio Out is limited by its analog signalDigital Audio Out is not limited by its digital signal
Audio Out is typically used to connect audio devices that do not have a digital audio outputDigital Audio Out is used to connect audio devices that have a digital audio output
Audio Out can suffer from interference and noiseDigital Audio Out is not affected by interference or noise

If My TV Doesn’t Have Optical Output How Can I Fix It?  


If your TV does not have an optical output, you may still connect it to audio and visual components using a few of the choices that are accessible to you.

The use of a digital-to-analog converter, or DAC, to change the digital audio signal coming from the TV into an analog signal is one of the most frequent ways this problem can be fixed. 

Connecting the digital audio output from the TV, which is often an HDMI or S/PDIF connector, to the input of the DAC and then connecting the output of the DAC to the external audio device is one way to accomplish this (i.e. soundbar, receiver, etc.).

Another option is to make use of an HDMI audio extractor to separate the audio signal from the HDMI signal that is being transmitted from the television.

 The digital audio signal that is transmitted over the HDMI connection will be extracted by the HDMI audio extractor, and then converted to an analog stereo signal. 

After that, the signal may be linked to the external audio equipment.

Last but not least, if your TV includes a headphone port, you may connect an adapter that converts headphone jacks to RCA to the headphone jack, and then use RCA cables to connect the external audio device to the adaptor.

 It will then be possible for you to send the audio signal from the TV to the external audio device using this method.

How To Choose Best Digital Audio Cable to Use For TV

Suplong Optical Digital Audio Cable

Suplong Optical Digital Audio Cable

  • LENGTH; 6 feet
  • CONSTRUCTION; Braided cable
  • WARRANTY; Lifetime warranty
View On Amazon
TOSLINK  CableDirect Optical Audio Cable

TOSLINK CableDirect Optical Audio Cable

  • LENGTH; 10 feet
  • CONSTRUCTION; Rubber cable
  • WARRANTY; 3 years long
View On Amazon
BlueRigger Digital Optical Audio Toslink Cable

BlueRigger Digital Optical Audio Toslink Cable

  • LENGTH; 35 feet
  • CONSTRUCTION; Rubber cable
  • WARRANTY; Lifetime warranty
View On Amazon

A digital optical cable is your best option when looking for a cable to transmit digital audio for your television. 

Digital optical cables were developed specifically to transmit digital audio signals between electronic equipment, such as a television and a receiver for a home theatre system. 

They are the most dependable method for transferring audio of the finest quality from a television to a receiver.

Digital optical connections can transport uncompressed digital audio signals with a maximum resolution of 24 bits and 192 kilohertz. 

Because of this, they are the best option for audiophiles and enthusiasts who want the sound in their home theatre to be of the finest possible quality.

Digital optical cables are also quite affordable, making them a wonderful choice for individuals looking for a solution that won’t break the bank.

 They are also simple to install and require nothing in the way of initial configuration. 

Additionally, digital optical connections do not suffer from the interference issues that are common in homes that have several electronic gadgets.

When searching for a digital optical cable to use in your home theatre installation, it is essential to be certain that the cable adheres to the appropriate standards for its construction.

 It needs to have a connection on either end that is suitable for use with the television as well as the home theatre receiver that you have.

 In addition, to assure its durability and dependability, it should be constructed out of materials of a high grade.


In conclusion, the digital audio-out feature that is included in smart TVs is an excellent method to experience audio of a higher quality with your television.

 It makes it simple for you to connect to your home theatre system or any other audio device, so you can take advantage of the enhanced sound quality that comes with doing so. 

In addition to this, the remote gives you full control over the audio settings as well as the volume levels. 

The digital audio-out feature included in smart TVs enables users to have the finest possible audio experience while watching their preferred movies and shows.

Share This