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True Wireless Stereo (TWS) Explained

Posted by Angus Jones ,30th May 2023

Demystifying True Wireless Stereo (TWS) Technology

True Wireless Stereo, or TWS, is a technology that enables two wireless earphones or speakers to communicate with each other and a Bluetooth device without any cables. While all wireless devices offer more freedom and comfort, TWS earphones deliver stereo sound quality. More expensive earbuds are more likely to have this feature, but you should always check before purchasing, especially with budget models.

TWS earphones have a small chip that allows them to pair with each other and the Bluetooth device. They are popular among music lovers, sports enthusiasts, and anyone who wants a hassle-free wireless audio experience.

TWS – True Wireless Headphones

True Wireless Stereo (TWS) headphones refer to earbuds that can provide stereo sound without a wire connecting the left and right earbuds.

Why should my headphones include TWS?

Before purchasing wireless headphones, consider the features they offer. Check out our blog on choosing the right headphones.

Most modern music is recorded and broadcast in stereo, meaning distinct sound channels for each ear. Only wireless headphones that support TWS can deliver true stereo sound without cables.

Advantages of TWS Headphones

  • Wireless Convenience: No cords or wires that can get tangled or damaged. You can also use just one earbud to extend battery life or stay aware of your surroundings.
  • Wireless Flexibility: Use TWS headphones for music, videos, calls, exercise, travel, and more. They easily connect to various Bluetooth devices.
  • Wireless Quality: Each earbud has its own Bluetooth chip and antenna, ensuring stereo sound. Some models also feature noise cancellation to improve audio clarity.

While some wireless headphones without TWS can produce stereo sound, they require a wire between the left and right earbuds.

What are the different types of TWS products?

True wireless devices can work independently or as a system of two matching devices connected to each other. They are portable and can be used both indoors and outdoors.

True Wireless Earbuds/Headphones

TWS earbuds are small, lightweight, and easy to use. They have rechargeable batteries and can be used individually or as a pair for different activities like cleaning, walking, running, or driving. Their wireless nature allows greater freedom of movement.

True Wireless Speakers

These speakers feature built-in rechargeable batteries, making them completely wireless. They can be paired with smartphones, computers, or TVs while maintaining great sound quality.

How does TWS work?

TWS uses Advanced Audio Distribution Profile (A2DP) technology to sync audio between two earphones or speakers. The master device receives the audio signal and transmits it to the secondary device for synchronized playback.

Setting Up a TWS System

To pair TWS earbuds or speakers, follow these steps (or use an app if available):

  1. Turn on Bluetooth and pair the primary device (as specified in the user manual) to your audio source (smartphone, PC, TV, etc.).
  2. Pair the secondary device to the primary device, not the audio source. This creates a stereo system where one plays the left channel and the other the right.

Each Bluetooth device has a built-in chip that wirelessly transmits and receives audio. The main speaker gets the signal from the source. If linked to another speaker, it sends the signal to its secondary speaker, creating a true stereo experience.

Helpful Hints

You don’t need to buy a big-name brand for a great audio experience. Laser offers quality, budget-friendly earbuds and headphones that deliver excellent performance without a hefty price tag.

Check out Laser’s affordable range of Bluetooth speakers, some of which support TWS.

Summary – TWS

True Wireless Stereo (TWS) allows two separate audio devices, such as wireless earbuds or speakers, to work together to deliver stereo sound. Without TWS, you would either need a cable between the devices or listen in mono.

Simply put, TWS technology enhances audio quality and provides a seamless wireless experience. When purchasing wireless earbuds, make sure they support TWS for the best results.