• Dolby Digital Plus

    A core format of Dolby Audio, Dolby Digital Plus raises the bar for surround sound on devices from smartphones to home theater, and in operating systems and browsers.

    Dolby Digital Plus Benefits

    • Up to 7.1 Discrete Channels of High-Fidelity Surround Sound

      Because Dolby Digital Plus™ (E-AC-3) is an advanced surround sound audio technology designed for evolving media, you get consistent cinema-style audio across your content.

    • Premium Mobile Audio Quality

      Dolby Audio™ adds depth and power for realistic sound through your headphones and device speakers. You'll hear clearly, even in loud and busy environments.

    • Built Into Windows 10 and Microsoft Edge

      Stream content through Microsoft® Edge on any Windows® 10 PC or tablet, with clear dialogue and greater detail.

    • The Sound of HDTV

      Dolby Digital Plus is based on core Dolby® Digital technologies, the established standard for cinema, broadcast, and home theater surround sound.

    • Full Interactive Support for Blu-ray BonusView and BD-Live

      Get the interactive BonusView™ and BD-Live™ features on Blu-ray Disc™. Hear streamed director's commentary, alternate dialogue, or alternative language soundtracks.

    • Ideal for Listening on the Go

      Scalable for uncompromised sound quality and faster downloads over constrained mobile bandwidths.

    Hear how Dolby Digital Plus enhances the flying fish scene in Life of Pi.

    Dolby Digital Plus: Consistent Quality on Every Device

    Enjoy vibrant, high-quality surround sound from all your favorite content with Dolby Digital Plus. Whether you're watching movies, TV shows, online videos, or concerts, Dolby Digital Plus ensures that you'll always get consistent audio quality.

    The Technology

    Dolby Digital Plus is an audio technology based on Dolby Digital 5.1, the established standard for cinema, broadcast, and home theater surround sound.

    How It Works

    Based on both psychoacoustic and cognitive models of audio perception, Dolby Digital Plus delivers HD-quality audio for streaming, on-demand, and downloaded content by using some of our most advanced algorithms. Dolby Digital Plus makes it possible to store and transmit high-quality digital sound to deliver the best audio quality possible on many different kinds of devices.

    Compatibility with Current Equipment

    Equipment with Dolby Digital Plus will unlock its full feature set, including 5.1- and 7.1-channel capability (depending on the program).

    If your system includes Dolby Digital, you'll still get 5.1-channel surround sound, with the highest-quality Dolby Digital signal possible. Because Dolby Digital Plus content is easily converted to a traditional Dolby Digital signal, you are assured of the best performance your equipment is capable of.

    Dolby Digital Plus Products and Content

    You can get the Dolby Digital Plus experience by purchasing home theater equipment, such as A/V receivers, Blu-ray™ players, or TVs with Dolby Digital Plus. You can also experience Dolby Digital Plus on a tablet or smartphone by purchasing one with preinstalled software. Check out the Amazon Kindle Fire tablet with Dolby Digital Plus.

    Look for content encoded with Dolby Digital Plus; you can decode that amazing surround sound experience with Dolby Digital Plus home theater and mobile products.

    You can find Dolby Digital Plus encoded content on Blu-ray Disc and from our partners, such as Netflix®, Vudu®, or Amazon Fire™ TV.

    Additional Benefits for Mobile Devices

    When incorporated into a mobile device, Dolby Digital Plus adds postprocessing technologies that dramatically improve your device's audio capabilities and your whole entertainment experience. Devices with Dolby Digital Plus have been specifically tuned so that even built-in speakers deliver natural, louder, distortion-free sound.

    • Download your files or streaming videos faster and more reliably.
    • Experience surround sound through your headphones or built-in speakers with the Surround Virtualizer.
    • Hear every word with the Dialogue Enhancer.
    • Keep the volume constant across all your content and applications with the Volume Leveler.
    • Connect your device directly to a home theater for a full surround sound experience with Dolby Digital pass-through.

    Changing the Sound of Mobile

    Amp Up Your Entertainment

    Discover how Dolby enhances home theater components, PC, tablets, smartphones, and content.

    Seize the Audio Opportunity

    IDC research shows that consumers aren't satisfied with their mobile device audio quality. Be among the first in market to meet this need.

    Dolby Digital

    Discover the industry standard for all US HD broadcasts and DVDs.

    Professionals and Dolby Digital Plus

    Dolby Digital Plus empowers content creators, developers, sound engineers, distributors, and device manufacturers to provide a cinema-like listening experience to audiences everywhere.

    Content Creation

    Dolby Digital Plus will help you tell your story the way you want, with the assurance that your audience will hear what you intended.


    Dolby Digital Plus facilitates efficient distribution to the widest range of devices for broadcasters, operators, and OTT providers.

    Device Manufacturers

    Manufacturers rely on Dolby Digital Plus so their users can experience the full emotional range of their entertainment anywhere.

    Compare Dolby Digital Plus to Other Technologies

    Dolby Digital Plus is one of many technologies that deliver surround sound. But how does it compare to other technologies?

    Dolby Digital Plus is the established standard for 5.1 channel surround sound on DVDs and HD broadcasts. It's also part of the Blu-ray Disc standard, so you can experience the clearest multichannel surround sound from your entertainment.


    Dolby Digital Plus

    Dolby Digital

    Competing Technologies

    Dolby TrueHD

    7.1 Channels

    5.1 Channels

    Streaming/download support


    Multiple BonusView support for Blu-ray

    Automatic stereo downmix

    Support for mobile networks


    Scalable for bandwidth-constrained applications






    Data rates supported: mono-multichannel

    32 kbps–6Mbps

    32–640 kbps

    Up to 18 Mbps