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ISO (aka SACD ISO) to DSF DFF [DSD files] Mac Windows


Convert ISO (aka SACD ISO) to DSF, DFF (DSD audio files) [stereo, multichannel] to playback music at audiophile apparatus, editing and hard disk space-saving. Read step-by-step manual how to rip SACD ISO file.

How to extract ISO to DSF, DFF (DSD files) [step-by-step]

To convert ISO to DSD files:

  1. Start ISO (aka SACD ISO) to DSF, DFF (DSD files) converter software AuI ConverteR 48x44.

  2. Push "Open files" button and open SACD .iso file.*
  3. Select DSF or DFF (DSD format) at main window Output panel. .dsf format support metadata (track, album, performer, album art, others)
  4. At the main window Output panel: select sample rate up to 45.2 MHz [DSD1024]
    (bit-perfect extraction at 2.8 MHz [DSD64] only) **
    Read about sound quality and full converting ISO guide >
  5. At main window Album art tab: assign album artwork **
  6. Select stereo or multichannel album variant extraction from ISO.
  7. Select target directory (see more in the video and tutorial)
  8. Push Start button to extract (rip) SACD ISO.
  9. Wait until the end of conversion (converted files are located in the target directory)
  10. If you got audible artefacts and distortions, it is rather overload issues.
    In Settings > General > "Output attenuator" field set "-3 dB" or "-6 dB" or use level normalization** (may not be applied for bit-perfect extraction) to maximize loudness. See more about troubleshooting...

WARNING: AuI ConverteR 48x44 doesn't support DVD-audio and DVD-video.
AuI ConverteR process too long file names and paths, non-Latin and forbidden characters (created from metadata) for successful output file writing
. Third-party utility decode SACD ISO for additional processing with AuI ConverteR. Read whole page carefully.

Watch and share: How to Convert ISO to DSF and DFF


* If .iso supported in the purchased configuration. When you convert first time read about (auto codec downloading and installing).

** If it's available in the purchased configuration

*** All prices at this page in the U.S. dollars without V.A.T. and other applicable taxes and fees. The prices are recommended. Information at this page is not a public offer.

WARNING: ISO (1-bit audio, aka SACD ISO only), DSF, DFF are supported in price configurable Modula-R and all-included PROduce-RD
For ISO tracks, DSF, DFF with length more 3 minutes FREE demo mute 2-second silence in the output middle

Converted stuff is placed in the target directory

Dithering is ignored when extracting ISO to DSF.

Select target format to convert ISO to DSF

Select target format ISO to DSF conversion


Album artwork panel

Album artwork panel

ISO to DSF, DFF general information and sound quality matters

SACD ISO is file-container with tracks (songs) included in a musical album. The file-container may contain mixes (variants) of album: stereo and/or multichannel.

The file-container has sample rate 2.8 MHz and bit depth 1 bit sigma-delta modulation / DSD (the author have no information about higher sample rates in the containers).

The file-container's stuff may be extracted in bit-perfect mode (without altering). There is binary content the container and extracted stuff is identical. It is possible at 2.8 MHz sample rate only.

Also, the container's stuff may be resampled so that playback at D128 and higher DAC or digital music player. Equipment has several playback modes (audio resolutions), that can cause individual distortion level of each mode. Using mode with minimal distortions can improve sound quality. Read details here >

Sound quality: AuI ConverteR vs a converter software: DSD64 to DSD128 noise

AuI ConverteR vs a converter software: DSD64 to PCM 44.1 kHz

In the ideal case, should not be noise in audible band. Lesser noise (darker background) is higher sound quality.

A multichannel variant may be played back at a multichannel system or downmixed 5.1 in 2.0 to playback at stereo equipment or headphones.

Downmixing may be performed inline ("on fly" into player) or offline (convert ISO to DSF 2.0 - with/without downmixing - before playback via music converter). Offline stereo extraction/conversion save disk space at portable musical device's hard disk. Therefore you can place more music at a digital music player or mobile phone.

Also, read some sound quality issues below.


Conversion ISO to DFF is not recommended. Because DFF doesn't support metadata (song, album names, performer, year, artwork) standard way. Theoretically, metadata may be built into DFF technically as non-standard information block. However, playback software/hardware will ignore it, as rule.

If the target sample rate is D128 / D256 / D512 / D1024, resampling processing is used. Resampling processing based on filtering. These filters have several settings.

At Settings > General tab:

  • Filter mode list:
  • "Optimized resampling filter" cut frequencies upper 20 kHz (eliminating of intermodulation distortions by ultrasound);
  • "Non-Optimized resampling filter" cut frequencies upper 20...24 kHz (depend on input/output sample rates) - eliminating intermodulation distortions by ultrasound, wider signal band;
  • "Non-Optimized wide resampling filter" cut frequencies upper 20...100 kHz (depend on input/output sample rates).


At some equipment "Non-Optimized..." filters can cause audible noise: see the video.

Watch and share: Noise when playback some high-resolution recordings (at some hardware)

"Optimized..." filter is recommended for most cases.

Check/uncheck Use minimum phase filter switch for minimum/linear phase filter respectively. "Non-Optimized..." filters have linear mode only.


How to keep disk space and energy at portable devices

SACD ISO files may contain 2 album variants: stereo and multichannel.

Portable devices (DAP, mobile phone) have:

  • limited hard disk space;
  • limited battery charge (time of autonomous work).

As rule portable device is intended for stereo playback.

An audio player software has 2 options:

  1. extract stereo album variant from SACD ISO;
  2. extract multichannel (5.1) variant and downmix it to 2.0.

In case #1, excessive hard disk space of mobile devices is consumed. And lesser music file number may be placed at the mobile device.

In case #2, additional computing resources (and energy too) are consumed. Additional energy consuming reduce autonomous-work time.

To solve cases #1 and #2, the extraction of stereo DSFs may be used.

If ISO contains multichannel variant only, downmix 5.1 to stereo may be applied.



a) Don't open content of mounted iso file. Open *.iso file instead.

b) To view ISO content (album name, performer, year, stereo/multichannel variants, track number):

  1. Push "Open files" button and open .iso (sacd iso only).
  2. In AuI ConverteR's main window Source files tab, hover mouse cursor under ISO file row.
  3. Tooltips window appears. Information about ISO is shown there. In round brackets, track number of each of album veriants is displayed.


F.A.Q. SACD ISO to DSF conversion

What is SACD ISO?

SACD ISO is DSD audio file, that is image of SACD optical disk. Read more...


How do I open a DSD ISO file?

DSD ISO file may be opened:


Is SACD the same as DSD?

Yes. SACD optical disk and its ISO image are one of DSD audio files.

SACD may be converted to other DSD files without losses.


Can you rip a SACD?

Yes, you can. To rip SACD optical disk you need:

  1. Special hardware,
  2. Special software.

Read more information...

How to rip SACD ISO file read here...


How do you convert SACD to DSD?

SACD optical disk may be converted to DSD files directly.

However, file name is formed by metadata. It can cause file-creating error due to:

  • non-Latin and forbidden symbols,
  • too long pathname.

In this case you can convert the optical disk to SACD ISO and extract DSD files with auto fixing of these issues.


How do I open SACD ISO file?

You can open it:

SACD ISO may contains stereo and multichannel variants of an musical album. It consume additional space at hard disk. It is significant factor for mobile devices.
To solve the issue, stereo variant may be extracted or multichannel one is downmixed.

Sound quality of SACD ISO to PCM extracting is defined by implementation. So, qualitative extraction may be used for further bit-perfect PCM playback.

Also, sampling rate and bit depth may be matter for sound quality.



DSD is common name of an audio coding way. DSD-coded audio data is stored in a SACD optical disk, SACD ISO file (image of the optical disk), DSF, DFF files.

Read more:


Is DSD better than FLAC?

Sound quality

In a recording/playback audio system, DSD format allows passing some stages theoretically. So it may be a way to reduce distortions. However, the audio-system design is matter.

Other issues

However, DSD causes some issues:

  • big file size,
  • more complex preparing for editing.



Can I rip SACD to FLAC? How Rip SACD ISO to FLAC?

SACD optical disk may be ripped to SACD ISO. SACD ISO may be extracted to FLAC.


How do I extract audio from an ISO file?

SACD ISO may be extracted to:


What is DFF file?

DFF file is DSD file by Philips. As rule, it used in pro-audio applications. Have DSF-format-identical sound quality.


Can you rip SACD audio?

To rip SACD optical disc, some hardware is need. See details by links below...


How do I convert DSF to FLAC?

See DSF to FLAC user manual...


Does is there a difference between SACD ISO to DSF converters?

  • If such conversion software item works in bit-perfect mode and without glitches, there is no difference for sound quality.
  • If resampling or any audio processing (gain, filtering, EQ, etc.) is there, it can cause a sound quality difference.
  • When ISO is extracted, an output file may be named according to the text ISO metadata. If the metadata are too long, file path+name length may be excessive for an operating system.
    Also, the metadata can contain non-Latin or forbidden symbols (*, ', etc.). These things cause (can cause) error. And extracted audio file cannot be created.
    For example, AuI ConveteR fix these issues automatically.


Are extracted DSF / DFF files have sound quality identical original SACD ISO?

Yes, when you use bit-perfect extraction mode and target sample rate DSD64.


Why stereo / multichannel extraction needs?

Multichannel extraction is recommended for multichannel audio systems only.

For stereo musical systems (especial portable ones) stereo extraction or downmix of multichannel to stereo is recommended. Read details...


What DSF/DFF sample rate is recommended to extract from SACD ISO?

Read recommendations for target sample rate choice...


When you oversample to DSF/DFF, is it necessary to extract to DSD64 first?

No. If you use AuI ConverteR, select any target format, sample rate, bit depth once, without any intermediate conversions.


Can I use batch ISO extraction with minimal configuration of AuI ConverteR?

Yes. You can use batch ISO conversion with minimal AuI ConverteR configuration.

However, it must be remembered that batch ISO extraction demands many free temporary hard disk space.

You can set hard disk for temporary space in AuI ConverteR settings > Misc > "Directory of temporary files". After it's changed, restart the software.


Do AuI ConverteR has built-in codec for SACD ISO extracting?

Third-party sacd_extract codec or other utility, compatible with AuI ConverteR, connected as command line utility, decodes SACD ISO for further processing with AuI ConverteR. Read more about codecs...

Where can I read about SACD to FLAC, WAV, mp3 and other PCM extraction?

Read this tutorial...


Where can I read the full SACD extract tutorial?

Read the full tutorial...


Can Foobar play DSD?

Yes. Read guide...


Can Foobar play ISO file?

Yes. Read guide...


Read more F.A.Q. about SACD ISO extraction >


Software configurations for ISO to DSF conversion

AuI ConverteR has several price/functionality options, that allow to save your budget for the required functionality.

* All prices at this page in the U.S. dollars without V.A.T. and other applicable taxes and fees. The prices are recommended. Information at this page is not a public offer.

[MINIMUM PRICE] configuration (from $22.3*) to convert
ISO (aka SACD ISO) to DSF (DSD64 only, without audio processing),
fix long path name and non-Latin symbol issues in target files


[Recommended] configuration (from $204.6*) to convert
ISO (aka SACD ISO), DSF/DFF(up to DSD128) to DSF/DFF(up to DSD128), FLAC and other PCM
(up to 192 kHz, 24 bit, 32 bit float)
with parallel processing, true gapless mode, level normalization, album artwork assigning.

[Recommended] All-included configuration (from $249.8*) PROduce-RD






Preparations for сonversion

  1. Launch AuI ConverteR 48x44 (see ISO to DSF converter configurations)
  2. Open Settings > CD ripper/ISO tab
  3. Select stereo 2.0 / multichannel (SACD 5.1) track extraction
  4. Skipping pause before first track: check "Skip pause for first ISO track" switch
  5. Skipping pauses between tracks: check "Skip pause for all tracks" switch
  6. Click OK button in the Settings window
  7. (Optionally) Continuous-album extraction (opera, concert, show or same ones): the main window > Parameters tab check "True gapless mode"**
  8. Binary identical (bit-perfect) extraction mode: the Settings window > General tab check "Don't make DSP ..." switch. The target sample rate must be 2.8 MHz (D64)

Convert ISO to DSF: Settings

Settings ISO to DSF conversion






Watch and share: Assigning of Converted Music Directory


Super Audio CD ripping to ISO from optical disk

SACD optical disk ripping cannot be read in ordinary CD/DVD drive of a computer. The ripping requires special hardware to SACD read. Read details:


Read more about ISO converters


Read other articles about audio
Check Free DSD Music Downloads
Check Free Hi-Res Music Downloads
DSD vs DSF vs DFF Files Audio. What is difference [Article]
Check FREE DSD players
DSD vs FLAC [Comparison, Infographic, Explanation]
How to Open DSF Audio Files [Converters, Players]

October 14, 2021 updated | since May 04, 2017


Copyright © Yuri Korzunov
["Audiophile Inventory" (since 2011), "AudiVentory", "Audiophile Inventory by".
Также "Audiophile Inventory by" (прежде "Audiophile Inventory") охраняемое коммерческое обозначение],
2010-2021. All Rights Reserved.
All prices at this site in the U.S. dollars without V.A.T. and other applicable taxes and fees. The prices are recommended. All information at this site is not a public offer.

Read about supported formats and third-party codecs

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