DSD vs FLAC vs WAV [What's better? 2022]

Is DSD better than FLAC?

Is DSD the best audio format?

Is there anything better than FLAC or WAV?

Frequently Asked Questions

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At first glance, the difference between DSD and FLAC audio formats is outstanding. Except for some limitations and features of each format, the comparison is very same to DSD / DSF / DFF / SACD vs FLAC / WAV / PCM. Many endless discussions, that format is the best, are there. But this question has no single answer. Read the explanation and Frequently Asked Questions by AuI ConverteR's developer Yuri Korzunov why it so, about comparison FLAC versus DSD sound quality and watch the video to study details below.

Watch and share: FLAC vs DSD [Format Comparison]

What are DSD and FLAC and WAV and SACD and others

To understand, which is better DSD or FLAC, we should explain what they are. From technical point of view, comparison of Direct Stream Digital and Free Lossless Ausio Codec isn't relevant. And we'll explain how to compare them correctly.

Watch and share: How to convert DSD files to FLAC

FLAC (WAV, PCM). What is FLAC format?

FLAC (Free Lossless Audio Codec) is an audio file-container format and compression method of recording or stream.

FLAC, WAV, AIFF are lossless implementations of PCM (Pulse Code Modulation) format. So, we should compare PCM versus DSD.

WAV and FLAC also may be used container file, that contains compressed and uncompressed PCM and DSD in DoP.

DSD (SACD, DSF, DFF). What is a DSD in audio?

DSD (Direct Stream Digital) is an audio recording or stream format by Sony, Philips. DSD sample rate is significantly higher than FLAC and other PCM (WAV, AIFF, etc.). And bit depth is reduced from FLAC's 16/24/32 bit to minimal 1 bit for Direct Stream Digital format. 1 bit is too low even for 2.8 MHz and higher frequencies. How 1-bit is allowable in Hi-Res audio read below.

DSD may be stored as DoP (DSD over PCM) into a lossless PCM container (FLAC, WAV, AIFF, etc.).

DSD has implementations: DSF, DFF, SACD optical disk, SACD ISO file (image of SACD optical disk), DoP.

Both DSD and PCM (including FLAC format) may present the same original song different ways.

In instance, we can present the music as an image consists many elements (mosaic).

Let DSD be like a smallest square elements (DSD samples). And let PCM be like a smallest circles (PCM samples).

We can compare 2 mosaic types (DSD and PCM formats) for the same original image (song).

Image quality (sound quality of playback of audio format) depends positions, size, color of the elements (audio format implementation).

When we convert one elemet type to another one (convert DSD to/from PCM), we have some losses (sound distortions).
If the conversion uses qualitative math, the losses (distortions) are very low.

What is PCM vs DSD? It's almost the same FLAC vs DSD. To be technically correct, we compare implementations of both formats. FLAC is certain application of PCM.

DSD vs FLAC comparison

Is DSD better than FLAC? DSD vs FLAC sound difference

The most popular DSD and FLAC comparison is listening to a single album by the same label in two different formats.

However, DSD and FLAC (PCM) sound quality comparison is a complex matter. Because there are many variables:

recording, mixing, postproduction,
level of recording loudness,
playback software,
hardware (player, DAC).

A sound difference between DSD and FLAC may be produced by a variance between these factors.

Watch and share: WAV and FLAC. Are binary identical or not?

Watch and share: How to split CUE FLAC

All these variables are defined by an implementation. Thus, it is impossible to say for every case: what sounds better DSD or FLAC. Because each case should be studied apart.

When we try to compare FLAC / WAV / AIFF ... other PCM and DSD album variants at home, it is easy to get sound difference due to 0.5 ... 2 dB variance between DSD and PCM circuits or software processing, in instance.

The variance may be considered as almost unlistenable as level difference. But we can get some impression of sound or audio quality difference.

So, before tests, it is necessary to compensate the level variance between DSD and PCM outputs to 0.1 ... 0.2 dB difference, approximately. It allows avoiding an imaginary sound difference due to various levels.

Otherwise, we risk getting "better quality" for louder DAC or DAC mode.

In instance, one person has louder PCM output and likes FLAC more. But other person has louder DSD output and prefer DSD. As a result, they can discuss "what is better" indefinitely.

And it is only one of several control goals, when the listening test is performed. And there are many details, that are invisible at first sight.

Read about hi-fi blind tests >

To DSD and FLAC format comparison:

watch video >
see infographic >

Modulation (digital audio type)

The main difference between FLAC and DSD is a kind of musical signal modulation. Or kind of analog signal coding to digital form. Further, we consider the difference in the modulations.

Bit depth and noise

Bit depth of DSD is reduced to 1 bit. But it causes huge quantization error noise and a low signal-noise ratio. To improve the ratio, noise energy is pushed out of the audible frequency range.

Sample rate

Bit depth reducing demands frequency range reserve for noise energy pushing. The range reserve may be added by a higher sample rate.

DSD sample rates: DSD 64, DSD 128, ...

FLAC sample rates: up to 384 kHz.

Useful band for audio (music)

The range reserve causes useful DSD audio band reduction, comparing [sample rate]/2 band of PCM.

DSD is intended for audible range transmission. As rule, DSD64, has minimum noise levels in the band below 20 ... 24 kHz. Above this band noise level grows with frequency.
Higher DSD sampling rate allows expanding this low-level noise band.
The aforementioned figures depend on implementation.

Size compression

DST (Direct Stream Transfer) is a size compression method for DSD audio stuff. It is implemented in DFF and SACD ISO files. DSF has no size compression ability.

What is size compression

We have actual issue with price of high-capacity storage devices. It's important for mobile device, especially.

So, compression of audio data size allows more optimal using of existing storage devices.

FLAC format is intended for size compression primarily. But there is the opinion (without objective evidence, known for the author), that computing for FLAC uncompressing causes additional electromagnetic interference of a computer (or a playback device), that degrades the sound. To avoid unpacking, uncompressed FLAC is used. The FLAC is used because it contains a metadata standard way.

FLAC file-container also can contain MQA-compressed audio stuff. Such FLAC may be played back without MQA-decoding.

How DAC works

As rule, PCM DAC is intended for FLAC playback, is based on a sigma-delta modulator and demodulator. The demodulator is a low-frequency filter.

DSD DAC can contain the filter only.

Read details about DSD >

Text metadata

Text metadata (album and track names, performer, etc.) contains in SACD ISO, DSF, FLAC files standard way. DFF has no standard metadata support.

Artwork metadata

SACD ISO and DFF don't support artwork metadata standard way. FLAC and DSF both can contain multiple artworks (album cover, band photo, etc.)

Frequently Asked Questions

Is FLAC the best format?

FLAC is one of a lossless formats, that are better by sound quality than lossy ones. Free Lossless Audio Codec provides size compression. But the sound quality is the same WAV, AIFF and other lossless formats. Also, FLAC allows a maximum sampling rate and bit depth limitation (32 bit, 384 kHz).

However, .flac file may contain lossy compressed stuff coded in format another than Free Lossless Audio Codec.

Is WAV lossless?

Yes. WAV is a lossless audio format.

Do FLAC files sound better? Do FLAC files really sound better? Is FLAC the highest quality?

FLAC files are lossless. And we can be sure, that FLAC fully keeps sound quality of a source digital signal. DSD and PCM are just different modulations and it is not a matter for coded musical signal in the digital domain (when no processing, of course). However, ADC and DAC implementations may make difference between PCM and DSD formats. Read more...

Is FLAC better than 320 Kbps?

FLAC is lossless audio format. So, technically, it is better than lossy formats with 320 Kbps bitrate.

Practically, if you listen to sound difference, use FLAC format.

Are DSD files better than FLAC?

DSD files are intended for DSD DAC. FLAC files are intended for PCM DAC.

If you want to get the best sound quality of your DAC, you can read how it can be done...

Is SACD better than FLAC?

SACD optical disk contains DSD audio content. You can read about FLAC and DSD comparison...

Is FLAC better than MQA?

FLAC is lossless format. As the author know, MQA is lossy format. Read details...

Is FLAC better than CD?

FLAC keeps full CD audio

Is there anything better than WAV?

WAV is one of PCM formats. It is very flexible. However, you can get compatibility issues with metadata displaying and WAV subtypes, like RF64.

Metadata issue may be avoided via FLAC format using.

Which is better quality FLAC or WAV?

Both FLAC and WAV are lossless formats. WAV provides wider resolution support. FLAC provides size compression and better metadata compatibility with music devices and software players.

Sound quality is the same for both formats. However, some discussion is there.

Read details...

Can you hear the difference between DSD and FLAC?

In some cases, you can hear difference between DSD and FLAC.

But it is not difference between formats as abstract items. It is difference between implementations of the technologies.

Is DSD better than PCM? Is DSD better than PCM? Is DSD better than WAV?

What is better DSD or PCM (FLAC, WAV, AIFF, others) depends on:

recording;
implementation of recording and playback equipment.

Lossless PCM files (WAV, FLAC, AIFF, etc.) have similar sound quality. However, they support different resolution audio.

Is DSD audio worth it? Is DSD better?

Theoretically, DSD allows solving issues of an analog filter of a digital-to-analog converter. Practically, it is a matter of recording quality and equipment distortions. Read more...

What is DSD files?

DSD files (.dsf, .dff, .iso [SACD ISO], .flac/.wav [DoP]) contains audio data in Direct Stream Digital format. Read more...

Is DSF better than FLAC?

.dsf is DSD file. .flac is PCM file. Read more here...

Can DSD be converted to FLAC?

Yes. DSD may be converted to FLAC.

Read guides:

Is DSD to FLAC lossless?

When DSD is converted to FLAC, it causes losses. However, for pro-audio conversion tools, the losses (distortions) are same qualitative resampling.

Read details...

Does FLAC support DSD?

FLAC is container. It can consists DSD in DoP format.

Does conversion FLAC to WAV lose quality?

When audio processing is not applied, WAV converted from FLAC provides absolutely the same sound quality. See video...

Should I convert FLAC to DSD?

You can convert FLAC to DSD, when it give actual sound advantages at your equipment. Read details...

Is DSD better than CD?

DSD gives potential abilities to achieve lower distoirtions than CD. However, depending upon used hifi system, recording quality, personal issues, a listener don't prefer DSD.

Are DSD files better? Is DSD better than PCM?

Despite DSD give some audio-equipment-design advantages to achieve better sound quality, only audio device implementation defines the actual sound quality of a device. How to look for the best quality of your audio system read here...

Is DSD better than mp3?

DSD is lossless audio format. mp3 is lossy audio format. Thus, DSD is better by sound quality, but consume more file storage space.

Is DXD better than DSD?

DXD is PCM format. So, recording quality together with playback setup make audio quality for a listener when DSD and DXD are compared.

Which is better AIFF or FLAC?

AIFF is a more flexible format (almost non-limited audio resolution, but some limitations with file length more than 4 GBytes). FLAC has better metadata compatibility with music devices and software. AIFF or FLAC is no matter of sound quality. Read more...

Is FLAC or WAV better? Is WAV better than FLAC?

WAV is a more universal format:

almost non-limited audio resolution,
file size limitation (4 GBytes), which may be solved via RF64 format.

FLAC has better metadata compatibility with music devices and software. Both formats have the same sound quality. Read more...

Is there anything better than FLAC?

If compare with lossless formats .wav and .aiff, FLAC has limited sampling rate and bit depth.

However, FLAC hasn't length limitation 4 GB like ordinary WAV. WAV/RF64 solves the issue.

DSD and FLAC is compared above.

What is DSD512?

DSD512 is a sample rate 22.6 MHz=44100 Hz * 512. Read more...

What is DSD music?

DSD music is music provided in DSD format. Some DSD music samples are recorded in DSD and distributed without editing. Read more...

Where can I listen to DSD audio?

You can listen DSD music here...

What is DSF?

DSF format by SONY is one of Direct Stream Digital file formats. Read more...

What is the difference between DSD and DSF?

DSD is sound format for high-resolution audio. DSF files contains audio in DSD format. Read more...

Is SACD better than CD?

It depends on recording and equipment. Read more...

Is MQA better than DSD? Is DSD better than MQA?

Many factors impact to sound difference between MQA and DSD: implementation of recording and playback equipment, mix and postproduction quality of a recording. Also, it needs to remember, that MQA is lossy. But we can compare only implementation of given audio systems. Because the small losses may not be a "bottleneck". Read more...

What is DSD audio?

DSD audio is a method of coding an analog signal in a digital form. Read more...

Is DSD the best audio format?

In theory, DSD audio system reduces number of required components. However, given system design is a matter for actual distortion level. Quality of recording (including mixing, postproduction) impacts to listenable experience.

Read details: