FLAC vs WAV vs MQA: Which Lossless Audio Format Should You Choose?

When building a high-quality music library, one of the first decisions you'll face is: which audio format should I use? FLAC? WAV? ALAC? DSD? MQA?

This guide breaks down the major lossless audio formats, their pros and cons, and helps you decide which is best for your needs.

Quick Comparison

Format	Compression	Quality	File Size	Metadata	Compatibility
FLAC	Lossless	Identical to source	~50-60% of WAV	Excellent	Universal
WAV	None	Identical to source	Large	Poor	Universal
ALAC	Lossless	Identical to source	~50-60% of WAV	Excellent	Apple ecosystem
DSD	None	Unique character	Very Large	Limited	Specialized
MQA	Lossy*	Good	Small	Good	Limited

FLAC (Free Lossless Audio Codec)

FLAC is the most popular lossless format among audiophiles—and for good reason.

Pros:

• Truly lossless – Bit-for-bit identical to the original
• Smaller files – About 50-60% the size of WAV
• Excellent metadata support – Album art, tags, lyrics
• Open source – No licensing fees, universal support
• Widely supported – Works on almost every device and player

Cons:

• Requires decoding (minimal CPU usage)
• Not natively supported on some older devices

WAV (Waveform Audio File Format)

WAV is the original uncompressed audio format developed by Microsoft and IBM.

Pros:

• No processing required – Direct playback, zero CPU usage
• Universal compatibility – Works everywhere
• Preferred for editing – No encode/decode cycles

Cons:

• Large file sizes – A 4-minute song at 24/96 is ~70MB
• Poor metadata support – Tags often get lost
• No album art embedding – In standard implementation

When to use WAV: Audio production, archival masters, or when storage isn't a concern and you want zero processing.

ALAC (Apple Lossless Audio Codec)

ALAC is Apple's answer to FLAC—functionally identical but optimized for Apple devices.

Pros:

• Truly lossless, same as FLAC
• Native support on all Apple devices
• Good metadata and album art support

Cons:

• Limited support outside Apple ecosystem
• Slightly larger files than FLAC (in some cases)

When to use ALAC: If you primarily use Apple devices (iPhone, Mac, Apple Music). Otherwise, FLAC is more universal.

DSD (Direct Stream Digital)

DSD is a completely different approach to digital audio, using 1-bit samples at very high rates (2.8MHz for DSD64, up to 22.5MHz for DSD512).

Pros:

• Unique sonic character—often described as "analog-like"
• Used for Super Audio CDs (SACD)
• Excellent for certain classical and jazz recordings

Cons:

• Enormous file sizes – DSD64 is ~2x the size of 24/96 FLAC
• Requires DSD-capable DAC for native playback
• Can't be edited directly—must convert to PCM
• Limited catalog availability

When to use DSD: If you have a DSD-capable DAC and appreciate its unique sound character. Not recommended as a primary format.

MQA (Master Quality Authenticated)

MQA is controversial. It claims to be "better than lossless" while using smaller files than FLAC.

The Truth About MQA:

• MQA is not truly lossless – It uses lossy compression
• Requires MQA-certified hardware for full "unfolding"
• Proprietary format with licensing fees
• Has faced significant criticism from the audiophile community

Our recommendation: Avoid MQA when possible. A standard FLAC at 24/96 will sound as good or better without the compatibility issues.

Which Format Should You Choose?

Your Situation	Recommended Format
Building a music library	FLAC – Best balance of everything
Apple ecosystem user	ALAC – Native Apple support
Audio production/editing	WAV – No encoding overhead
Archival masters	WAV or FLAC
Limited storage space	FLAC – Half the size of WAV
Maximum compatibility	FLAC – Works almost everywhere

Conclusion

For most audiophiles, FLAC is the clear winner. It's truly lossless, well-supported everywhere, has excellent metadata handling, and saves significant storage space compared to WAV.

If you're in the Apple ecosystem, ALAC is equally good. WAV is best for production work. DSD is a niche format for specific use cases. And MQA... is best avoided.

The most important thing? Use lossless formats when possible. Any of the truly lossless options (FLAC, WAV, ALAC) will preserve your music perfectly for decades to come.