Lossless or Compressed: What the File Format Changes
Streaming services offer different quality levels. Knowing what the labels mean helps you decide whether the difference matters to you.
Two meanings of compression
In audio, compression can mean two unrelated things. Data compression makes files smaller. Dynamic range compression reduces the difference between loud and quiet parts of the sound. They are often confused.
Lossless and lossy
Lossless compression shrinks a file in a way that lets the original data be reconstructed exactly. Lossy formats discard information the encoder predicts you will not notice, giving much smaller files.
Can you hear the difference?
Sometimes, depending on the recording, the equipment and your ears. The honest test is a blind comparison: have someone play the same track in both formats without telling you which is which.
What matters more
- The quality of the original recording and master.
- Your headphones or speakers, and your room.
- Listening at a sensible volume in a quiet place.
The loudness question
The loudness war describes a trend of making recorded music ever louder, which critics say reduces fidelity. A heavily limited master sounds flat in any format.
remastered 2026-10-20