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What is ALAC? Apple’s Lossless codec explained
In This Article
Looking for a streaming service that supports higher-resolution audio? You’ve probably come across terms like ‘AAC’, ‘FLAC’ and ‘ALAC’.
We’ve put together this guide to explain everything you need to know about ALAC, including what it is, where you can find it and how it compares to another lossless format, FLAC.
What is ALAC?
ALAC (Apple Lossless Audio Codec) is Apple’s own lossless audio compression format and a higher-resolution alternative to the standard AAC (Advanced Audio Codec).
While both ALAC and AAC are compressed and both feature the file extension, ‘.m4a’, ALAC files retain the audio quality of their source making them the higher resolution option of the two formats.
Of course,AACfiles still have their pros. The lossy audio format consumes significantly less mobile data when streaming and downloading AAC files takes up much less space on your device than lossless ALAC files.
However, to reap these benefits, you’ll need to compromise on quality. This might not be a big deal depending on what headphones you use – some cheaper pairs won’t allow you to hear the difference between AAC and ALAC, meaning you may as well stick with the lossy format.
That said, if you want to listen to CD-quality audio, ALAC is the way to go.
Where can I find ALAC files?
ALAC is supported across Apple devices – including the iPhone, iPad, Mac and HomePod – and on Android devices usingApple Musicor iTunes.
Apple rolled out lossless audio for Apple Music listeners in mid-2021, relying on the ALAC format to deliver high-resolution sound.
The entire Apple Music catalogue has since been encoded with ALAC in resolutions ranging from 16-bit/44.1kHz – also known as CD quality – up to 24-bit/192kHz. LikeTidaland Amazon Music, you don’t even need to pay for a higher tier to listen to lossless audio on Apple Music.
Is ALAC better than FLAC?
FLAC (Free Lossless Audio Codec) is an open-source alternative to ALAC.
Both formats are lossless, meaning the quality is identical. However, ALAC files are designed to be used with Apple products, while FLAC files are supported across a wider range of devices and services.
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Hannah joined Trusted Reviews as a staff writer in 2019 after graduating with a degree in English from Royal Holloway, University of London. She’s also worked and studied in the US, holding positions …
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Founded in 2003, Trusted Reviews exists to give our readers thorough, unbiased and independent advice on what to buy.
Today, we have millions of users a month from around the world, and assess more than 1,000 products a year.
Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest. To ensure this is possible, every member of the editorial staff follows a clear code of conduct.
We also expect our journalists to follow clear ethical standards in their work. Our staff members must strive for honesty and accuracy in everything they do. We follow the IPSO Editors’ code of practice to underpin these standards.
