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DFF to FLAC Converter for Mac OSX, Windows [Software]


AuI ConverteR 48x44 is DFF to FLAC converter (Mac OS, Windows) of audio files. For music production and hi-end home audio. In this article minimal price configurations are reviewed.
Look user guide below.

Audiophile DFF to FLAC converter

DFF to FLAC converter audio

    prepare music for:
        digital audio players,
        mobile phones,
        media servers/streamers,
        car stereo systems;
    convert 1-bit audio stuff
        for PCM DAC.

    Multichannel and stereo
    DFF D64 / 128 / 256 / 512 / 1024
    FLAC 16 / 24 / 32 bit, 44.1 ... 352/384 kHz
    Auto loudness normalizing

Key features >     DFF to FLAC configurations >     Quick start >

Download HD audio converter AuI ConverteR 48x44 FREE for high resolution music
WAV, FLAC, AIFF, ALAC, (1-bit audio) ISO, DFF, DSF, WMA, mp3, CD-audio...

WARNING: Input DSF, DFF, ISO (1-bit audio) supported in Audiophil-E, PROduce-R and configurable Modula-R
Output DSF, DFF supported in maximal PROduce-RD and configurable Modula-R
For ISO tracks, DSF, DFF with length more 3 minutes FREE demo mute 2 second silence in the output middle
Watch and share: Audiophile DFF Converter to FLAC

Conversion sound quality

Sound quality (distortion value) is first point of attention in design professional software. Tranformations should be transparently to original stuff quality as possibly.

Any AuI ConverteR’s version provide fully identical signal processing quality.

But functional restrictions and available formats, sample rates, etc. are different.

The software convert  DFF audio file to FLAC as sigma-delta-modulation noise filtering.

Operas, musicals, live concerts and same albums are solid music stream. Recording is done in single file. Before placement at optical disk the stream is divided into tracks. At its borders non-zero loudness are possible. It can cause border artefacts.

Converting such tracks as separate files, cause aftefacts at track borders. Because processing is initialized at begin of next track. True gapless conversion process these tracks as single stream with initialization at first album composition begin only.

1-bit formats maximal value is  -6 dB limited. It is DSD modulator's stability issues. Auto level normalizing magnify (or reduce in some cases) loudness of all tracks so maximal peak level of full converted album is 0 dB.

Resampling filters of the conversion software are reviewed here.




Key features

  • Studio sound quality
  • DFF sample rates: D64/128/256/512/1024
  • FLAC sample rate: 44.1 ... 384 kHz
  •            bit depth: 16, 24, 32 bit
  •            adjusted levels compression: yes
  • Stereo and multichannel both are supported
  • Downmixing multichannel 5.1 to 2.0
  • True gapless conversion (see below)
  • Auto level normalization (see below)
  • 3 resampling fiter modes (into DFF decoder)
    (from optimized mode (eliminating of audible ultrasound intermodulation products at some equipment) to 100 kHz wide band mode)
    Metadata editor (add/edit/remove album, song names, year, performer, genre and other, add/remove artworks *.png, *.jpg)
  • group metadata editing of several files.


True Gapless Mode

True gapless mode intended for albums, that should sound as solid stream. It is live concerts, operas and other. After resampling at track borders, artefacts can appear. It happens due processing re-initialization at the begin each track. In True gapless mode initialization is performed at begin of first album track.

If True Gapless Mode turned on, album tracks are converted sequentially, one-by-one. There is need information about end of previous track before start processing next one.

True gapless mode


Auto level normalization

As rule, 1-bit records have -6 dB headroom by sigma-delta modulator stability issues.

Auto level normalization allow to maximize album level with keeping relative levels of its tracks.




DFF to FLAC Converter Configurations

Audio quality is fully identical in DEMO, Lite, Audiophil-E, PROduce-R, PROduce-RD, Modula-R.

In the DEMO at the middle of converted tracks, two seconds are muted.


Below order’s links are placed, where prices of configurations are shown.
V.A.T. and/or other applicable taxes may be added to the prices in your country.


The software configurations to convert DSF to FLAC:

Modula-R edition can save budget via purchasing only DFF to FLAC conversion modules.

Modula-R edition is single software unit. You can order modules (module's license keys) and enter it there. Each key "open" relevant functionality.



Integrated configurations

Audiophil-E edition support DFF (D64/128) to FLAC (16, 24 bit / up to 192 kHz).

PROduce-R is support DFF (D64/128) to FLAC (16, 24 bit / up to 384 kHz) with metadata editor FLAC, WAV, AIFF, DSF.

Maximal PROduce-RD support DFF (D64/128/256//512/1024) to FLAC (16, 24, 32 bit / 384 kHz).



Modula-R configurations

Minimal configuration that can convert DFF to FLAC (up to 192 kHz, 24 bit):

Input DFF sample rates D64 and D128 supported.

Mac OS X      Windows

DFF to FLAC converter with faster parallel processing of several songs (multi-CPU batch processing)

Mac OS X      Windows

Convert DFF to FLAC in True Gapless Mode

Mac OS X      Windows

Convert DFF to FLAC with Auto Normalizing Level

Mac OS X       Windows

Convert DFF to FLAC with True Gapless Mode and Auto Normalizing Level

Mac OS X       Windows

Configuration with faster parallel processing, True Gapless Mode and Auto Normalizing Level

Mac OS X     Windows

Also additional modules of functionality extension available as separate order:

Parallel Processing                      Mac OS X       Windows

True Gapless Mode                     Mac OS X       Windows

Auto Loudness Normalizer         Mac OS X       Windows

Manual Loudness Control           Mac OS X       Windows

Metadata Editor                           Mac OS X       Windows

Support 352/384 kHz                   Mac OS X       Windows
     output sample rate


Configure now your Modula-R online with Easy Configurator >

Contact us We help you to configure the software. Simply describe what functionality you want.




How to convert DFF to FLAC

1. Push Open files button and select *.dff file.
First time, codec request window appear. To auto download and install the codec, push OK button.

2. Choose FLAC in main window (right middle part) Format field.

3. Choose output directory

In main window of the conversion software (left lower part) Directory output files field

Set output directory for converted files

It can be as absolute as relative source-stuff directory.

4. Push Start button.

Wait until end of conversion. Converted stuff see in directory that selected in goal 3.

Set output compression level

  1. In the conversion software's main window push Settings button, Settings window is appear.
  2. In Settings window > General tab > set the level via FLAC compressing slider.

Any compressing level provide same sound quality.



Read more

About FLAC (Free Lossless Audio Codec) >

About DSD demodulator >



DFF format specification

Free Lossless Ausio Codec format specification



Read more about DFF

  1. DFF file format. DFF file extension >
  2. DFF to DSF Conversion on Mac OSX, Windows, Linux >
  3. DFF to DSF Converter >
  4. How convert DST compressed DFF under Windows >


Read articles

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