Audio Format Comparison

ALAC vs WAV: Apple Lossless vs Uncompressed Audio

ALAC and WAV both preserve audio perfectly — the decoded output from an ALAC file is byte-for-byte identical to the original WAV. The difference is that ALAC applies lossless compression (similar to ZIP for images) making files 30–50% smaller while maintaining zero quality loss. WAV is raw PCM with virtually no compression — larger but universally supported without any decoding layer. For music listening and archiving, ALAC wins on size. For professional recording and DAW integration, WAV is the safe default.

ALACvsWAV

Quick Verdict

Use ALAC when…

Use ALAC for music listening and archiving in Apple's ecosystem — same quality as WAV but 30–50% smaller and with rich metadata support.

Use WAV when…

Use WAV for professional recording and DAW work — universally supported by every audio tool without any compatibility concerns.

ALAC vs WAV: Feature Comparison

Feature	ALAC	WAV
Compression	Lossless compressed	Uncompressed (PCM)
Audio quality	Bit-perfect (identical to WAV)	Bit-perfect
File size (4-min CD)	~22–35 MB	~40–50 MB
Metadata support	Rich (tags, artwork, lyrics)	Limited (basic ID3)
DAW compatibility	Most DAWs (some prefer WAV)	Universal — every DAW and audio tool
Encoding/decoding overhead	Minor — negligible on modern hardware	None
Broadcast use	Not standard	Industry standard (BWF variant)

When ALAC wins

✓Compression: Lossless compressed
✓Audio quality: Bit-perfect (identical to WAV)
✓File size (4-min CD): ~22–35 MB

When WAV wins

✓Compression: Uncompressed (PCM)
✓Audio quality: Bit-perfect
✓File size (4-min CD): ~40–50 MB

Frequently asked questions

Do DAWs support ALAC?

Major DAWs have varying ALAC support: Logic Pro X supports ALAC natively. Pro Tools requires conversion to WAV. Ableton Live does not natively import ALAC. GarageBand on Mac/iOS supports ALAC. For maximum DAW compatibility, use WAV or AIFF as your session format — keep ALAC for listening and archiving.

Is ALAC smaller than WAV?

Yes — ALAC achieves 30–50% compression ratios depending on audio content. Speech and quiet passages compress more; dense music compresses less. A 50 MB WAV typically becomes a 25–35 MB ALAC file with identical decoded quality.