What Is True Wireless Stereo Technology? How Does It Work?

The world of wireless audio has been going through a major transformation. Over the past few years, more and more people have been buying Bluetooth-enabled headphones, speakers, and other devices that connect wirelessly to their smartphones, tablets, laptops, and other gadgets.

The result? A surge in the number of people who are using wireless audio. This is a trend that is expected to continue for many years to come. But what exactly is true wireless stereo technology?

This article explains what true wireless stereo technology is and how it works. We also talk about some of the advantages and disadvantages of this technology.

What is True Wireless Stereo Technology?

If you’ve been shopping for the latest headphones, earphones, and other audio accessories, you may have come across the term “True Wireless Stereo Technology,” or TWS. If you’re not sure what this technology is, or how it’s different from other types of audio products, then you’ve come to the right place.

TWS is a proprietary technology that allows a pair of wireless headphones or earphones to communicate with each other without connecting cables. This technology doesn’t need a smartphone or tablet to connect two devices to each other, like Bluetooth does.

TWS was first introduced in 2016 by headphone maker Bragi and has since become a popular feature on wireless earphones. The technology is also known as True Wireless Stereo Plus, which is short for True Wireless Stereo Plus, a brand name owned by Apple.

The “true” in True Wireless Stereo refers to the ability for each earbud to transmit an independent channel of audio data to the receiving device. So, rather than just one earbud transmitting the left channel and the other the right, both can transmit the left and right channels, respectively.

True wireless stereo technology works on the same principle as wired technology. It connects the audio source to the audio receiver via a wireless connection.

This technology is ideal for users who are looking for a reliable and hassle-free way to listen to their music or audio content. This technology also eliminates the need for wires and cables, which means that you don’t have to worry about tripping over them or having them get tangled up.

True wireless stereo technology is also very convenient. You can move around with your device without worrying about it getting lost or getting tangled up in something. This is one of the reasons why true wireless stereo technology is becoming so popular.

Typical True Wireless Applications

These days, TWS (True Wireless Stereo) technology has been widely used in our lives. Where can we hear the voice of TWS technology? Let’s check it out.

A Bluetooth Headset

The most popular and common application of TWS is the Bluetooth headset. The Bluetooth headset has a great market and provides convenient and reliable communication for people.

The Portable Bluetooth Speaker

With the continuous upgrading of TWS technology, portable Bluetooth speakers now also have a sound effect similar to wired speakers.

In addition, portable Bluetooth speakers are easy to carry, so you can take them anywhere you want to go. Portable Bluetooth speakers are very popular with people because they have good sound quality and are easy to use.

Portable Earphones

In addition to wireless headphones and portable wireless speakers, True Wireless Stereo technology has also been applied to the design of wireless earphones with a small size and light weight, which makes it very convenient for people to carry out sports activities.

The popularization of wireless earphones makes it easier for people to enjoy music anytime and anywhere, making music become a part of life.

How Does True Wireless Technology Work?

It’s quite simple. You simply need to grasp three roles:

  • The music player, often known as the source device, is the device that provides the signal to the second device through Bluetooth. Typically, it is a smartphone, tablet, or computer.
  • The master device receives the signal and delivers it to the other device.
  • Slave device: Receives the master device’s signal.

Let’s look at an example with many goods. If you’re using TWS earbuds, the smartphone serves as the music player or source device since it feeds music to the earphones. The master device (in Energy Sistem devices) is the right earbud, while the slave device is the left earbud.

When utilizing TWS speakers, the smartphone serves as the music player or source device, while the speaker that you link through Bluetooth with the smartphone serves as the master device. As a result, the speaker you connect to the master speaker through True Wireless becomes the slave device.

The master device is in charge of two connections. The connection to the music player/source device, as well as the connection to the slave device.

The Advantages of True Wireless Technology


One of the biggest advantages of true wireless earbuds is the convenience they provide. Without wires connecting them to each other or another device, these headphones are easy to use and put away when you’re done listening to music. No need to worry about tangles or knots in cords — just put the headphones back in their cases and go!


These headphones are much lighter than traditional wired headphones because there are no wires connecting the two buds together. This means you can enjoy your music for longer without feeling any strain on your neck or head from using heavy, bulky wired headphones.

Audio of High Quality

It’s good for sound quality because true wireless earbuds don’t have wires that limit how far they can move and how well they can send sound waves.

They also have better battery life than conventional wired earbuds due to advances in technology over time, which allow them to more efficiently convert electrical energy into acoustic signals without losing any along the way, as noise would with lower-quality devices.

Enhanced User Experience

Since you don’t have wires hanging off your head or dangling by your sides, you can feel completely free while listening to music.

For active listeners, it’s also easier to run and exercise without getting tangled up in cords. Plus, the convenience of having no wires means you can use true wireless headphones anywhere-whether that’s in the car on your commute or at home when cooking dinner for yourself or family members.

The Disadvantages of True Wireless Technology

Limited Battery Life

Since the earbuds are so small and can’t be connected to each other with wires, they don’t have a lot of space for a large battery. That means the average battery life on most true wireless earbuds is around 5 hours, though some models last longer. You can get up to 5 or 6 hours of use out of a single charge, depending on the model you buy and the volume you listen at.

Since they only last three to five hours, many models include a charging case that holds extra power to recharge your earbuds while they’re not in use. When your earbuds run out of power, just stick them back in their case for a boost in power so you can keep listening for another 5 to 6 hours. Most cases provide around two full charges for your earbuds, meaning you can get up to 10 or 12 hours of total listening time before you need to plug in your case and recharge it again.

True Wireless Earbuds Are Easy to Lose

True wireless earbuds are generally small and lightweight, which is great for portability. However, it means they’re also easy to lose.

Many true wireless earbuds don’t come with a case to store them in. When stored in a pocket or bag, they can easily fall out without your knowledge.

While some manufacturers include a case with the earbuds, you still have to remember to store them in the case when not in use. This can be tough if you’re used to just shoving your earbuds into your pocket when you aren’t using them.

Even if you do happen to buy a pair that comes with a case, you still have to keep track of the case itself. If you can’t find the charging case, then you won’t be able to charge your earbuds.

Control Buttons May Be Difficult to Use

Many TWS earbuds and headphones include physical buttons for controlling music playback and for answering calls. As these are mechanical controls that require contact with the skin, it can be difficult to use them when you can’t see the buttons.

This can be a bigger problem for some people than others. It’s a particular issue for athletes who want to listen to music while they’re exercising. If you’re using your earbuds while jogging or cycling, you’ll have to stop in order to adjust playback or answer a call.

Some manufacturers have attempted to solve this problem by adding touch-sensitive areas that respond to gestures — such as swiping up or down on an earbud — but these don’t always work well, especially if you’re exercising outdoors in poor weather conditions.

What Is the Difference Between True Wireless and Bluetooth?

Bluetooth and true wireless are two distinct technologies. The difference between the two comes down to how audio signals are sent and received.

In terms of how they sound, it’s more about how they feel than anything else. For the most part, Bluetooth earphones transmit their signal via radio waves, which means that you can get a little static, but for the most part, that static is barely noticeable.

True wireless earphones don’t have any wires or cables connecting the buds to each other or your device. But because they have to transmit through radio waves, the buds will have a battery life of up to four hours.

On top of that, because the buds themselves have to have an antenna and circuitry inside them, Bluetooth buds tend to be a little bit heavier than their true wireless counterparts.

Bluetooth headphones sound great and are easy to use with multiple devices at once, plus you can use them without having to charge them every few hours. However, if you want something more compact and intuitive, true wireless is best for you.


True wireless stereo technology can be somewhat confusing, especially to those who have never heard of it before. But if you read the information above, you should now understand the basic concepts and how it works in comparison to traditional wireless headphones. We hope that this helps you determine if true wireless stereo technology is right for you. 

Audio Loli