What is FLAC? A simple guide to high-quality audio

What is FLAC? A simple guide to high-quality audio. Photo of a file.
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FLAC stands for Free Lossless Audio Codec. It is a type of audio file format that preserves the original sound quality while reducing file size. Unlike MP3, which removes some audio details to save space, FLAC keeps 100% of the original recording without any loss in quality.

FLAC uses lossless compression, meaning it reduces the file size without affecting the sound. It works similarly to a ZIP file—you can shrink the file to save space, but when you play it back, the full quality is restored.

  • Better sound quality – FLAC captures all the details of the original recording, while MP3 removes some frequencies to make files smaller.
  • Smaller file size than WAV – While FLAC files are larger than MP3s, they are still about 50% smaller than WAV files, which are completely uncompressed.
  • Supports metadata – FLAC files can store information like album artwork, track names, and artist details, making it easy to organise music collections.
  • Open-source and widely supported – FLAC is free to use and works on many devices, including computers, smartphones, and high-quality music players.

FLAC is popular among audiophiles, musicians, and anyone who wants to enjoy music in the best quality possible. You can use FLAC files on:

  • High-resolution music players like FiiO, Astell & Kern, and Sony Walkman.
  • Music software such as VLC, Foobar2000, and Winamp.
  • Streaming services that offer lossless audio, like Tidal and Qobuz.

If you care about high-quality sound and have the right equipment to enjoy it, FLAC is an excellent choice. However, because FLAC files are larger than MP3s, they take up more storage space, so they may not be ideal for devices with limited capacity.

FLAC is a great format for anyone who wants to listen to music as it was meant to be heard. It balances high-quality audio with efficient file sizes, making it a top choice for music collectors and audiophiles.

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