Quick Verdict
Use WAV when…
Use WAV for audio production — recording, editing, mixing, mastering, and any workflow where audio quality must be preserved at every step.
Use AAC when…
Use AAC for audio distribution — podcasts, streaming, music stores, and any context where file size matters and listeners use modern devices.
WAV vs AAC: Feature Comparison
| Feature | WAV | AAC |
|---|---|---|
| Compression | None (PCM — lossless) | Lossy (perceptual coding) |
| File size (1 hour) | ~640 MB (44.1kHz, 16-bit stereo) | ~115 MB (256 kbps) |
| Audio quality | Perfect — original PCM data | Excellent at 256 kbps — near-transparent |
| DAW compatibility | Universal — all DAWs | Limited (some DAWs require plugins) |
| iOS/Apple Music | Plays on all devices | Native Apple format |
| Streaming platforms | Accepted for upload (converted internally) | Widely accepted delivery format |
| Round-trip editing | No quality loss on re-save | Quality degrades on re-encode |
When WAV wins
- ✓Compression: None (PCM — lossless)
- ✓File size (1 hour): ~640 MB (44.1kHz, 16-bit stereo)
- ✓Audio quality: Perfect — original PCM data
When AAC wins
- ✓Compression: Lossy (perceptual coding)
- ✓File size (1 hour): ~115 MB (256 kbps)
- ✓Audio quality: Excellent at 256 kbps — near-transparent
Frequently asked questions
Should I submit my music to streaming platforms in WAV or AAC?
Always upload WAV (or FLAC) to streaming platforms. The platform will compress to AAC/OGG anyway, but compressing from WAV gives the platform's encoder the best source material. If you upload AAC and the platform re-encodes it to AAC, you've done two lossy compression steps — quality will be slightly worse. Submit in WAV/FLAC: DistroKid, TuneCore, CD Baby, and all major distributors accept and prefer WAV.
Is 256 kbps AAC truly transparent (indistinguishable from WAV)?
For most music and most listeners: yes. Double-blind listening tests show that most people can't reliably distinguish 256 kbps AAC from lossless WAV. Trained audiophiles with high-end equipment may detect differences in complex passages. Apple Music streams at 256 kbps AAC (plus their Lossless option which is ALAC). This is considered indistinguishable from lossless by most listeners.
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